In the same situation Kryton.
Had a "chance" demo of an anthem at Peaslake 18 months ago and couldn't stop smiling for an hour afterwards. A year later, I was still thinking about whether to have more of a trails bike so demoed both over a long weekend.
I rode both on (1) typical Peaslake/Winterfold day (all of pitch hill, Evian, 3 amigos and over to Holmbury for YP, the long one in the middle and then finally a blast down Barry's) and (2) a 3 hours XC blast around devils Punchbowl, Hankley etc.
I enjoyed riding them both in each circumstance. But the Trance was noticeably more fun to push down runs like 3 amigos and Evian. Part of that may have been the tyres as it was damp and the Ralph's on the anthem were much less grippy on the Pitch hill roots. I so enjoyed the trance so much that I nipped up Radnor lane a second time to test it's climbing ability - not bad at all. So Trance 9, Anthem 8
The surprise was in the longer runs with plenty of steady climbing. I expected the anthem to win this hands down, but actually little difference for me. The Trance did not feel heavy or much slower. So Trance 9, Anthem 9.
So bloody hard to chose - and then giant come out with 29ers are not that good really stuff so put off my purchase. I am convinced that 29ers suit me so I am now in exactly the same position but with Spesh in the mix:
Anthem/epic v camber evo
I love all three! Plus now tempted by sale 2013 advanced XTC 29 HT for a whippet/Xc bike
As an allrounder I would probably chose the anthem just (only for doing a few races) but will probably by the evo (confused, moi?) The epic is too much money for me (£4k) but the best bike I have ever ridden by a mile. But tempted by XTC advanced now and then pick up camber evo in the sale. But two bikes is an extravagance IME !!!! Did I really say that?
Blimey, sorry for the ramble. Today I am camber evo, tomorrow the anthem. 2014 anthem in black looks v nice. 2014 T29 looks horrible (1 version) IMO