I love to jump as well, but limit myself because a horse only has so much jump in them. I only have one horse to ride, and I want to save his legs for comps, not piddling around at home over fences.
My favorite fences are CC fences of course. I love to Fox Hunt with our local Hunt Club, and I love to do Hunter Paces and comps involving natural obsticles.
I don't have a particular favorite fence, they are all the same to me - but what I love, is the companionship between my horse and I, and the team effort we both put in together to accomplish our tasks at hand.
I do alot of dressage. When I say alot, I mean 4/5 days a week alot. Jumping is afterall, Dressage with Speed Bumps.
Since Eventing now demands a good Dressage Score, that has become my horses and my main objective.
I know I can jump. I know he can jump - so why waste it practicing at home? I save that for comps and for our weekly lessons.