Ohhhh you'll get lots of answers on this topic.
Personally I like TrueCredit. I can pull daily if I like and it gives me all 3 reports as well as FACO scores. FACO scores aren't really relevant except as I can see a trend in which way they are going.
Some folks have had issues with TrueCredit though. Apparently there is something about pulling your reports daily that qualifies as fraud. This however was a few months ago and I am betting they got that fixed. In any case I have had it since Oct. of last year when I financed my new house. Now I intend to keep it as a tool until I reach my goal of stable mid to high 700's.
Others will come in with the ones they use and like the most soon. There is also if you search the boards a thread that someone (I forget who much to my shame since it is an excellent post) has listed most of them with their plus's and minus's.
Van