This was pulled from the SRT6 Specifications document that is in the document collection thread:

Coupe 3240 (1469 kg)
Roadster 3328 (1509 kg)

So according to that, it's only an 88 pound difference. With the power the SRT6 has, you're not going to notice much difference in quickness so I wouldn't put to much weight on the weight into my decision.

Drive one of each - you can take some Limited's for a ride (easier to find) to get an idea of the basic difference/feel between the coupe and 'vert. The first crossfire I found and drove was a Limited coupe, and I quickly realized that I was too claustrophobic for the coupe. I still found and drove an Aero Blue SRT6 Coupe before I bought my vert - just to make sure ...LOL!

My first color choice was SSB, but after seeing a graphite metallic SRT6 convertible, that's what I wanted and eventually found.

Good luck!

Jon