Whenever this topic comes up there appears to be a measure of consensus that aerobatting in something with low energy that's a bit marginal can be very good for your aeros, but there's also the sheer fun factor to be considered, and something a bit rorty and chuckable can assist on the cheesy grin front. Cap 10s aren't that hard to take off and land in. This must be true, as even I can do it (after getting the tailwheel tick on a Cub). The Cap is most exceedingly and greatly and considerably delightful to fly in. A Tiger Moth is really quite hard to fly without it wandering about all over the place, but is terribly good fun. Alas, I haven't yet sampled the delights of Pittses, Stampses and Yakses.