I've used the Leapers one piece. It's a great mount. The "high" mount is indeed high. Unless you have a scope with a large front bell, a "medium" height is probably more what you'll be wanting:
http://www.amazon.com/UTG-Airgun-Medium-Profile-Integral/dp/B002TUSJVQ/ref=pd_sim_sg_6
Of course, it depends on the size scope you are installing. On a "high" Leapers, something like a 4x32 scope will sit up there very high, more like a carrying handle than a scope.
http://www.amazon.com/UTG-Airgun-Medium-Profile-Integral/dp/B002TUSJVQ/ref=pd_sim_sg_6
Of course, it depends on the size scope you are installing. On a "high" Leapers, something like a 4x32 scope will sit up there very high, more like a carrying handle than a scope.