There are several things you can do to reduce noise/vibration. I include vibration because I feel it's a big part of the noise the shooter senses.
If the bow vibrates a lot it seems louder to me. I tried minimum weight arrows and a fastflight string when I first got my Phoenix and it seemed like it was way louder than my old Exocet. Had a friend shoot it while I was in front (and off to the side behind a tree) and it didn't seem nearly as loud.
Tried several things to dampen the sound. Experimented with arrow weight, STS string dampers, different string materials, Dbs on & off, etc.
I now hunt with it using 375gr arrows (25gr over minimum) and a Boo string with catwhiskers. No STS or S5 dampers and no DBs on it. Not saying they don't help, just saying I don't see the need for them for my comfort level of perceived noise.
Get an Excalibur (you won't regret it

), experiment with a few methods of reducing noise if you're uncomfortable with the noise level, shoot it a lot, and you'll soon be so impressed with the accuracy you'll be watching the "robin hoods" and forgetting the noise.
As for hunting deer, I've always kept shots under 30 yards and over the years only had one deer "jump the string". In hindsight (always 20/20) I believe that deer was looking at me and reacted to the flash of the limbs moving forward as I shot instead of the noise. At least it was a clean miss.
All my kills have been under 30 yards (most under 20, and several under 10) and I have never seen one move until the arrow hit. (Except that one that was looking at me, and it taught me a valuable lesson - light travels much faster than sound).
A few years back I did have one that decided to take a step as I was pulling the trigger and it was too late for me to stop, but that's another tale and I'll skip the details on for now.

- 7 yard shot and it was so close I didn't notice it was about to move because I was looking through the scope. I did recover it, but lost the meat to heat & varmints.
