I have yet to see any crossbow quieted enough to make a difference to Bambi. As far as making it suit you better, That's a personal thing. I shoot an Excalibur Matrix 330. It's loud. It annoys me. Because it is very, very accurate, I did some precise shooting on four deer last year. At 20 yards none of the four so much as twitched before the arrow went through. All four were relaxed at the shot. All four knew I was there (neighborhood deer).
If you're going to shoot twitchy deer at fifty yards, everything you can do will help, but I would doubt you can do enough without taking a serious speed hit to matter one iota at that range.
