107.5 is one of the radio stations I listen to regularly. I wouldn't exactly call it 'extreme rock' as they call themselves, rather it's more of an alternative rock station... Sometimes they can overplay certain bands, usually when those bands are about to play a concert in Vegas
Dave and Mahoney are the morning DJs now, while I miss hearing Adam Carolla, these guys are pretty fun as well.
I'll be honest, one of the main reasons I love this station is because I have won LOTS of cool shit from them. Tickets to all sorts of events like midget wrestling, Strikeforce and even a sold out UFC fight! I also won free window tinting for my car from them a few years back.
If you like alternative rock, 107.5 is really your only option is Vegas these days...