I've always thought my next move would be an E39 M5. But the 550i has got my attention. Once you figure in tax and license, the 550i will be a touch more expensive. The 03 M5 has 14k miles. I'd like to hear some opinions if you were faced with this decision. While I'd love an E90 M5 my budget is right at $60k. If you're not familiar with the 550i it has the 360hp 360tq 4.8 and will come in both manual and SMG.