The stuff at Big Bend, near Moab looks pretty good too, but get's very hot, even in late spring. I thought Little Cottonwood was ok, basically generic granite bouldering and disappointing compared to Bishop. Also LCC has one of the highest snowfalls in the US, so the boulders are covered from November until spring. Ibex is great, but not a whole load to do there, unless you do some routes as well. Also gets HOT and snakey!
Joe's is ace, but can get cold and wet for a few days at a time as it is in the eastern side of the Wasatch Mountains. Triassic is a good alternative if weather at Joe's is minging, as it is lower and dryer. I stuch some phots of Triassic on here, but can't find them at the moment. If you fancy some sightseeing, Zion and Capitol Reef National Parks aren't too far away.