Woah Woah Woah. He does not need to dump 2 grand on his first bike, that's stupid. Also, if he is riding mountains and is somewhat new to the game, a full-suspension, heavy as fuck downhill bike is not optimal for trail riding.
I would suggest starting out with a mid-level hardtail MTB, $400-$700 range, and just make sure it has decent front shocks, disc breaks and shifters. I've been riding my $550 Ironhorse hardtail for six years now and it's still going strong, I've taken it on plenty of technical downhill terrain as well. Wait to spend the money on expensive niche downhill stuff when you really get into it, otherwise you'll be left with something un-versatile.
PowderHound and TreeNinja