I'm somewhat mixed, though I like most of the the new sounds
Some of the old ones were garbled sound vomit but then again some of the new ones, while more realistic, sound like someone shoving a stick between some fan blades at best.
I feel as if CS:GO needs to make things new and refreshing, and making some of the sounds either more realistic, or changing them a bit was a good start.
The awp although sounds like thunder, and the M4A4 sound to me at least doesn't sound like the actual weapon. Other than that, I believe that the new sounds are good; as some of them have been around for far too long.
All the sounds are much better. they sound much more realistic and energetic. I wish for 1.6 AK sound but thats not gonna happen. Only complaint is a1-s. Sounds like a friggin staple gun.