I'm new at photography and am picking it up as a hobby. I'm having trouble deciding what ballhead to get for it. I really enjoy the Markins Q3, but think that is too expensive for just an amateur. What I'm looking for is something similar to the Markins Q3 (easy to adjust on the fly, "sweet spot") and I also would like a bubble attached to the head. The tripod I'm set on is the Manfrotto/Bogen 190XproB I've been looking at the Manfrotto/bogen 488RC0 and am wondering if the plate and quick release mechanism can be changed out at all? any recommendations on a different ballhead?