I'd have to say you can't go far wrong with a Specialized Camber as your first foray into modern FS - that's basically its intended market really! It's kind of a general purpose, 120mm-travel trail bike: not steep enough angles to be twitchy and race-oriented, but not so slack as to feel slow.
My OH has the 2011 Elite which to all intents and purposes I've stolen, and it's a great bike. Get the shock/fork pressures right, tweak the rebound to suit and it's a really fun, playful ride. Fork and rear shock have lockout too, if that's important to you (I never use them off-road, even climbing). You do have to adjust your riding style slightly though, especially climbing as the "sdtand and hammer" approach isn't as effective as sitting and letting the rear suspension track over bumps.
$2k would net you a 1-year old Expert I think, which is a very nice bike indeed.
In terms of modern groupsets, SRAM are reckoned to be slightly clunkier shifting than Shimano, but slightly more reliable due to the 1:1 actuation ratio. Have to say, I prefer the finesse of modern Shimano, plus I like the 2-way release on the shifters.
Groupset order is:
Shimano - XTR, XT, SLX, Deore, Alivio
SRAM, X0, X9, X7, X5, X4
There are others below those but they're not worth bothering with.