[Legion5]

Vipers can be had for about the same price as Honda Accords with slightly higher mileage, and the reason the price is so slow is that the demand isn't there and most people want to pay much less which is why they depreciate so quickly. Vipers are nice but there's a reason you don't see them often, they are extremely difficult to drive, it takes 2 months just to learn how to not stall the engine in traffic and the gearing is not designed for daily driving, it will not be a lot of fun.

If we were talking a ZR1 then it would be a different deal, but your M3 will simply be much more satisfactory day to day. Don't let the "good deal" fool you into making a bad choice, it's cheap because nobody wants it.