Haven't demoed either of those, but do have a 2007 Felt F1X cyclocross bike. Nice bike, all 105 stock. Had a horrible brake chatter problem with the stock canti brake, solved by switching to a mini-V.
Note that if you do a web search Felt has had several models of cx, road bikes with fork recalls due to various defects. Including my bike; they replaced the fork but I had to cover the labor at my LBS.
This bike is a bit big so I'll probably be selling it.