I have been to Moab twice and had very different experiences both times.

First - it's a fantastic place!! Unbelievably beautiful, great weather, good food and of course, awesome riding.

The first time I went, I had mountain biked twice in my life. Granted, I was fit as I was a road rider and I was comfortable with clipless pedals.

The second time I went, 1 1/2 years later, I was a much better rider having spent the 1 1/2 years riding trails in British Columbia.

While I did enjoy my first time, I preferred my second time. We rode Klondike Bluffs (a fantastic intro into this crazy slick rock stuff!), Gemini Bridges (a very easy, very cool ride), and then Slickrock, in that order. I loved slickrock (we did the practice loop first), fell a few times, walked anything that looked suspect.

Second time, I rode Slick Rock, Porcupine Rim & Sovereign and had a totally different experience. Much more comfortable on my bike, didn't fall, was able to ride most of Slick Rock, positively LOVED Porcupine Rim and didn't really find it all that difficult except for one small section.

Anyhow, in a long-winded way, I would say go to Moab and just be prepared to walk anything that looks heinous or you feel uncomfortable on. It hurts to fall on slick rock and there are some trails where an error could be very serious. If you go, like someone above said, start with Klondike Bluffs. SOvereign Trail is not difficult either - and it's fun singletrack (a novelty for that area). The only tough part is the approach (a steep, short hill - absolutely walkabout with no fear of death).

Enjoy!!