Radni,
W4S excels with synchronous USB, but if you don't intend to go computer-based, then this feature will not matter to you. I, personally, use my W4S in a computer-based system with superb results. Red book and hi-res files are a joy to listen to.
Also, W4S has built-in volume control which means that you don't need a preamp, if you don't have any other analog source. It accommodates multiple digital sources.
This is how I use my W4S, directly into the power amp.
W4S also has polarity switch, which, believe me, makes a difference, albeit subtle, and other settings to fine-tune the sound.
I didn't have the pleasure to audition the Bryston and I'm sure it's a great unit.
One might say that picking up over the other might be a matter of preference, like everything in this hobby of ours. In this case my or anybody else's advice, sound-wise, shouldn't matter all that much to you.
Then, you may want to consider the features set and see which one wins in this respect.