Wilson Audio WATT/PUPPY or Gershman Grand Avant Garde?

Many thanks.
Glad to hear I won’t go wrong with either choice.
I have two sets of amp/preamp. Plinius SA 102/Plinius M16P, and Audio Research 150M.2/PrimaLuna Dialogue Preamp. Hope both of them would work well with Gershman or Wilson.

tvad and others,

My room (basement) is 15 x 30 x 8. Would it be too small for Watt/Puppy? I am sure it is adequate for Gershman.
I am leaning to Gershman, and one of the reasons is that Watt/Puppy may overwhelm my room. And also, it would be a bit hard to move them to basement.
thx

Great.

Both Gershman AG and Wilson Watt/Puppy became available within driving range from where I live. I'll make a decision by the end of the week.
Again, thanks for all input.

I bought Gershman Grande Avant Grade.
I appears to be power hungry.
To crank up, I need to turn the volume to over 12 o'clock on my 100w, 125w, and 150w amps.
I don't have such wow feeling that I had with Wilson Watt/Puppy a long time ago at audio show. Also, its sound stage and image is not as good as Diva. It lacks liveliness too. 
However, it still sounds better than my Harbeth 7ES-3 and Tyler Linbrook signature. Anyway, it has to be since it costs 2~3 times retail.
I could have gone for Wilson Watt/Puppy 5 used for less price, but due to its size and the need for professional setup, I chose Gershman. It is quite light and I have no problem of carrying it by myself.
Even though I cannot say that I am 100% satisfied, I will stick to Gershman at least for a while (a couple of years) and enjoy the music.
Again, thanks for all your input.

I think 8.5W is a bit too narrow. Mine is close to 15W. This speaker may easily overwhelm the room. 

My amp is Plinius SA 102 and Audio Research 150M.2.
I think 150W tube power is more than enough. Not only the power, but the quality of power would matter too.
Your room size, the listening volume level, and the speaker cable will make difference too.
If your room is bigger than 20W-25L-9H, you may not feel that the sound would fill your room.
One downside is, some bad CDs sound really bad. Good audiophile CDs and SACDs sound really good. (Also audiophile LPs) Of course, you need to have a good CD/SACD player. Mine is OPPO 105D and Esoteric UZ-1.