Harness advice freestyle/acro

I´m looking for some advice on acro/freestyle harnesses, i want dual reserves and i want it to be rather short and easy to transition from running/standing/balancing or just hanging and dragging your feet along the beaches or snowy mountains.

My only experience so far is the supair acro 3, wich feels alittle deep, the seat extends way out to your knees so to speak :think: