My little Welshie, bad feet and all, can clear my 4' pasture fence and has a beautiful, round jump with tight knees. I wish could jump her myself rather than watch in horror as she does it on her own... but I would totally get a Welsh X to jump with after seeing her. Ponies are fun.
Money being no object, I would probably seek out a purpose bred warmblood. That might not be the most FUN horse though. There's something fun about bringing along a less traditional horse.