Who has switched from a PS Audio BHK Preamp to something else?

Why switch?  I have a BHK preamp and BHK 250 and love them.  Perhaps you are needing to look at other items in your system to replace?  Like source (DAC), cables,  Speakers, power?  

Where does your system need help with?

I moved to Don Sachs latest tube pre.  After switching in and out of my system for a few months I sold both my PS-BHK and AR-Ref-6ES.  Don's pre is just has a better synergy with the balance of my system.  Super quiet, super dynamic, and not rolled off, colored, or syrupy. 

I happily ran the BHK pre for 3 years along with the 300 mono's.  I think it's a great preamp for the money, and I really liked the tube rolling flexibility for system tuning. 

But I am an itchy audiofool, too, and my budget has recently increased (kids all through college!  house paid off!) so I tried out the Luxman C900u pre and it plainly revealed to me how much more informative a preamp could be, but obviously at a higher price in this case.  Once I heard that much more musical info, I didn't want to go back, even though the Luxman C900u proved to be too "neutral" for my system and tastes (I run TAD CR-1's that need to be pulled back a bit from getting too hot). 

Next up was an ARC Ref 40 tubed pre, and it is still riding well in my system.  It has all that musical information, but with a bit more harmonic fleshing out, which is hitting my system really well right now.

So, if you are willing to spend more money, there's more to be had, but it's no "revolution", "wipes the floor with it" kind of thing.  The BHK gear is the real deal, IME/IMO, delivering a really good musical experience.   I could have happily lived with them both for years if my budget hadn't expanded.

@tinear123 So you have Don's preamp more neutral than the ARC 6SE ? Otherwise similar performance ?

jbrrp1, that's the situation I am in. I have more $$ coming in and I always get the upgrade bug. Nothing wrong with the BHK, I just start reading about new gear.