I've heard that buying a plane sucks, renting a plane sucks, and buy/lease back to an FBO sucks real bad. Best advice I've heard is that buying a plane works well if you don't like sharing your stuff... and of course have the bank roll to do it. Renting in block hours from an FBO is probably the most cost effective method from what i've heard but you don't have ultimate control of the schedules for a specific plane and don't have control of the mx.