What is your experience with Magico A3 or A5 speakers and the company as a whole?

The issue here is no loudspeaker is perfect. The 5 notable High-End US speaker manufacturers Magico/Rockport/Wilson//YG and Von Schweikert all excel in different ways. Despite Wilson Audio being the least desirable IMO, of the 5 companies mentioned they retain the highest resale value due to being an aspirational brand.

I was in a similar situation to you two years ago looking to replace speakers I had lived with for 15 years and still really liked their sound.  I was in no hurry so I listened to a lot of speakers, including Magico, Rockport, YG, Vandersteen, Estelon, Focal, KEF, Sonus Faber, B&W and Wilson.  Nothing really made me want to replace my speakers for the cost of new.

Magicos were too sterile and polite.

I was close to buying Rockport Aviors.  They did everything right but for some reason just did not excite me.  Don't know why.  

YG Hailey were great with a Vinnie Rossie integrated but that was over 100K of system and the YG Vantage 3 powered speakers were really not to my liking.

Vandersteens were ok but only the Kentos sounded as good or better than what I had and not enough to justify the cost to me.  The complexity of the Vandersteen system was also a negative factor for me.   

Estelon Y's sounded great, but again with high end hardware (Vitus).  I also think they look cool.

Focals were just too big for my room.

KEF blades were good but not enough better than what I had.  The same for B&Ws.

Most Sonus Faber are too laid back for my tastes.  Then I heard the Lillium.  They were spectacular but too big for my room and too big for my wallet.

The previous iterations of Wilsons (after the Sophia 2) I thought moved away from the sound I liked from the Sophias.  That was until I listened to the 50th Anniversary Watt Puppies.  I played them with an Ayre 8 series integrated and they sounded great.  I listened to them with a Boulder 866 and they sounded great.  I took my own equipment to the shop and they sounded even better.  They just put a smile on my face with each song.  Can't explain it in detail but I knew it when I heard it.  They also fit in my room perfectly.  Now I find out that I also get this awesome street cred too!   What is not to like?

What this longwinded post is intended to say is, if you listen to enough speakers you will eventually find one that puts a smile on your face and results in involuntary foot tapping and you just know they are the ones for you.  If you haven't had that feeling yet, keep looking and listening until you do.  If beryllium makes you uncomfortable, move on.  There are plenty of great speakers that don't use it.  If you have to analyze micro details or listen for hours to tell the difference, move on.  Trust your instincts and realize what you have are pretty great speakers that may be hard to replace.

Best of luck in your search and enjoy the process.

I have Magico S3 MKII.   Damaged a beryllium tweeter.  I am still alive and healthy. Scott Walker of Anaheim's team came and replaced the driver.  I didn't send the speaker to the factory.  Now I keep the metal grills on all the time unless listening.  They attach with magnets. Don't know why you couldn't get the grills as well.  I have a PS Audio BHK pre and 250 Stereo Amp.  Not really happy with the bass, considering giving them a little more current.  Maybe monoblocks. I agree with one other commenter that they reveal the flaws in upstream equipment which I have been gradually improving (sources).   However, I also suspect my dreadful" room" that has halls and stairwells.   The most "musical" the S3MkII have been for me is with vocals and jazz.  I auditioned the Legacy Aeris.  Bigger drivers, bigger sound.   Made me cry, the sound of a simple piano solo was so beautiful.  But it could have been the associated equipment and the terrific room.  So many variables.  I agree with others, take the long journey and listen to a lot of speakers.  For me, floorstanders are just so heavy and unwieldy that it is not an easy swap without trying to improve the audio chain first and even the room. 

Take this for what it is worth. I have auditioned a LOT of speakers and I bought a demo pair of tidal akira’s, as they worked best for what I wanted and my system (Nagra HD amps and preamp) the M6-M7’s were extremely high on the list. Magico makes an excellent speaker, that being said they are very unforgiving of source equipment. Good equipment (and slightly laid back) produces spectacular results. Wilson felt a bit less cohesive but still an excellent speaker. I think Tidal, Magico and Marten are all in the same category, pick your favorite as it relates to your system and preference, Wilson and a number of others fall slightly below that category, but certainly not a poor choice. 

Buy high end speakers really requires listening and people will have quite different opinions.  This is good as it reflects the diversity of the high end community.

Not quite 3 years ago I decided to upgrade older speakers. I listened to quite a few.  Personally, I did not like the Magico A series very much.  However, I listened to the Magico M2 and liked them a lot.

Then I compared them to the Sonus Faber Serafinos.  To my quite pleasant surprise I preferred the Sonus Faber at well less than half the price.  I listen to classical music almost entirely and I found the Serafinos to be more musical.  I have had them over 2.5 years and enjoy them every day.

I pair the Serafinos with Simaudio 891 preamp and a pair of Simaudio 761 amps bridged as monoblocks.   Straight Wire Expressivo 3 interconnects and speaker wires. All very expensive, but sonic bliss.

So, to me the Magico A series are just one more set of speaker. The M2's are great if you prefer the more clinical sound of Magico to the more musical of Sonus Faber.

Happy listening.