I have an Anthem X2 at the moment and like it. Reasonable spec for the money if you can pick up a 2010 end of year deal. I’ve had a Spesh Epic in the past and liked that too.
The Anthem frame has gradually evolved over the years. I think 2009 is quite similar to 2010. I looked at the 2011 model, but didn’t think I’d benefit from the different bottom bracket and tapered steerer tube, so went for the cheaper and better looking (IMHO) 2010 X2.
Issues wise, I haven’t heard any bad stories. Mud clearance isn’t great (not much room between tyres and seatstay bridge), and the suspension links seem to attract muck.
Before I got mine I looked at the Scott Spark, Spesh Epic, Trek Top Fuel and glanced at the Lapierre X-Control and Cannondale Scalpel.