If I remember correctly, the 18 Road trails were pretty mellow--if you like flow, that's the spot. Easy to put a 2-3hr ride there.

I liked the trails in the Horsethief and Wrangler/Lion's/Troy Built area (Kokopelli area) better, but they're slightly more chunky.

Didn't make it to the Lunch Loops area, but I've heard good things about that as well.

Anyway, I know this isn't super helpful, and there are tons of new trails in the last several years. I enjoyed the area, but I have a hard time justifying passing by Moab to head to GJ/Fruita