I agree with IO540. Unless money is no object, and / or one flies an awful lot, then one is FAR better off buying a decent fast single. The TB20, for example, will match the Seneca in performance up to 10k (or above?) I should imagine. The Seneca will win with regards to de-ice and climb in the higher FL's, and of course over mountains at night if the engine quits, but unless you have a lot of exposure to that type of flying, then is it worth the extra cost?