dude, I live two hrs from both Josh, and Tahquitz. Personally I prefer Josh. As far as weather, depends when you will be there. If its early fall go to Tahquitz, if late fall, Josh. One thing to remember about Tahquitz is the route finding. If you are strong on following lines you won't have a problem. However, most people(including me) have gotten off route at Tahquitz. Having said all that, I prefer the longer(7 pitch) more moderate(5.7/8) routes on the north face. As someone said, Suicide is across the valley. Climbing is more straight forward there.
Keep in mind, the face routes at Suicide are not sport climbs.