I had the 29er 110 (one of the first I think) and it was a great bike. Ended up with a 130mm fork on the front. Aways felt it had more travel than it actually did. Very stiff, really nicely engineered and well thought out, rode brilliantly for all sorts of different terrain. Took it to the Pyrenees and rode some pretty hard (to me) trails and the bike was never the issue.
Also probably the best climbing FS bike I ever had (although my Mojo3 is pretty close). Is the 120 the 27.5 version? I rode that at a demo and it felt pretty similar.