Well, I must say I can't pick a favorite, but I'm not a big fan of sport lead as I come from the old school " the leader must not fall. " Sport climbing tends to be very hard, and falling is part of it, plus it's sad to see bolts placed next to perfect gear pockets. I guess I like to feel in control. My hardest sport lead was a .10b and my hardest crack lead is .10c, which is backwards from what most people do.
Bouldering is really free, yet committing. It's social and can be done while drinking beers and hanging out. I have a couple of First Assents credited in the back of Robert M.'s Joshua Tree bouldering guide. There is nothing comparable to running laps on Gunsmoke in Jtree for a total body/mind workout.
The whole 70+ feet of Gunsmoke your feet never are more than 5 feet of the ground, but it's wicked hard traversing from right to left. PIX:
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Lead climbing moderate crack routes up to about 5.10b is my favorite. There is something cool about " stitching " up a pitch with natural protection. Long multi-pitch routes in the 5.8 zone are the very best, and on those we would move as fast as possible. Me and a buddy did Cathedral Peak which has a 800' face and is about 2 miles from the road in a little under three hours, car to car.
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Alas, top roping is mostly what I do these days as we usually have the kids with us.
This is from my last climbing trip to Joshua Tree, Indian Cove some toprope.