I manage approx a 65% Business travel to 35% personal split in the Commander and occasional fly a friend's Cardinal (to take my mother to the DC area, she's 88 and flies long Mid-West trips in the Commander but use the Cardinal's great access for the short trips) and Monney with some rarer SR-22 & Columbia 400 (pre-Cessna) tech evals for friends.
2004 - 2007 Averaged 250 - 300 hrs per year
2008 was out of flying in prime July - Sept season due to eye surgery and then horrible Dec weather - but will pick up average back this year. I generally make sure I fly at least once in a 10 days for muscle memory & procedures currency so that I'm not caught in a situation where I am rusty and depart into a low ceiling right away.
Would not do it any other way, also use SW airline for West Coast trips.
PS er fellow Commanders in the interests of keeping up our standards, please suggest whether the business or pleasure category applies for the MHC flights taken while on a biz trip?