Well, I've been doing the research for a while now and finally decided on the D2 10" coil. I called to order it and the rep suggested the 12X10" butterfly. At first I was a little hesitant about changing my mind but I was intrigued by butterfly. I just couldn't find enough info or anyone with feedback on it. The rep was very informative and told me that she uses the coil herself and also has experience with other coils. She said that she loved it and that it was an excellent coil, so that was good enough for me. It should arrive in a few days so I can't wait to get it. Only so that I can stare at it until I'm able to use it when the ground thaws out.