335is! or if you're feeling nimble 135is!
as "The Low Key OG" said, in the real world, the 650 will not feel as fast as the 335.. I mean I can't speak first hand, about reliability.. but I could imagine it not being too swell.. and 360 hp, I know it is an old car but I think BMW was late to the party when they were making the 4.8L V8 that only pushed out 360hp... for that gas mileage and displacement, I'd want a land rocket, not a quick car.. still absolutely love the E63 6ers but as for buying one, never for me.. now F12 650/M6 ..
