Bryston or Pass Labs


Looking at the bryston 4b3 or the pass labs x-350.8 anyone has heard the two and which is the better performer?
givin2u
A modified 555ii adcom. Again l just want to know has anyone heard these two amps and their opinion. 
I had a chance to perform a direct comparison between the Bryston 2.5B3 and a Pass Labs amp (I forget the model) in the same setup. They simply sound different so I believe it will really come down to which you prefer. I prefer the Bryston, but the other person who was with me prefers the Pass.

I have also compared the newer Bryston cubed amps to their previous generations and there is also a very noticeable difference in sound character. So I wouldn't necessarily take the 135SST as a good reference point if you are considering the 4B3. I prefer the newer cubed series, but I have met people who prefer the older models after performing direct comparisons.
To nekoaudio if l may ask why you preferred the bryston and the other listener preferred pass labs.