Hey folks, I'm in the market for a used car...in particular something like a 2004ish BMW M3. I see the price of used convertibles is about the same as coupes, I've always wanted a convertible...but this will be my only car and it needs to be driven year round. How bad are rag tops in the winter? Does the back window fog up? Is the rag top noisy, windy, or cold when up? Thanks in advance for sharing your experiences and opinions.