My two cents!
I own an older (1992) Honda TRX 300 4 X 4 and it would take an act of God to get me to sell, trade, or give away this wonderfully reliable machine.
I have friends who own all types of rigs, Polaris, Yamaha, etc, and they all wish they owned a Honda. Reliable, strong, and well built, are just starting points for discussions when I talk about my quad.
As for quiet, I just purchased a Exhaust Silencer for $149.00 including shipping and it is unbeliveable! Took 5 minutes to install, after a ten minute welding job, and is so quiet that I actually drove past a small herd of deer and they never heard me until I was 10 yards away from them!
I searched the Web under ATV Exhaust Silencers and I think the name was BENz Silent Rider. They were great to work with and wow what a difference.
HONDA..can't go wrong!
Rustydog