Both for me as well! My horse is an eventer. My experience/knowledge lies mainly in the jumping but the feeling when you get THAT just right is amazing. I love jumping, absolutely adore it, there is nothing like the feeling of reaching new heights. I'm a huge chicken cross-country but Monty is a machine so he gives me a lot of confidence.
Tell you what I have never felt better than the day we were trotting and my coach said to just relax a little more and Monty just pulled out this most incredible trot out of nowhere... from hollow and rushy to relaxed and swinging through the back, all because I relaxed. Wow. That was FLATWORK, which traditionally I hate. I will jump given the choice, but I think I'm learning to enjoy flatting.
Only thing that has ever come close was my jumping lesson last week where my coach told me I was good enough that I didn't need to use my hands for balance. We're only jumping small at the moment but that's because he wants me to work on getting Monty in deeper before we go up in height. He tends to take the long spot a lot, being a cross-country machine. And guess what... it's all FLATWORK that's getting us in deep and that will, therefore, increase Monty's upwards scope over fences. Not that what we're doing at the moment really counts as jumping... it can't be more than 6 inches when we start a lesson, and no more than 2 feet by the end of it. Part of it is that my saddle SUCKS (it's a tiny, cheap little synthetic a/p that I just can't get OUT of, so I look worse than I really am, plus it's at least an inch too small), and part of it is that Monty needs to be more consistent.
I much prefer my dressage saddle to my all purpose, and the dressage fits Monty a lot better - that's the main reason we're mostly flatting at the moment. When I eventually find the money for a proper jumping saddle, that is likely to change. Or even just a better all-purpose!