Having carpal tunnel severely limits which razors I can comfortably use. A 40's superspeed seems to shave the best for me, but than thin handle is super uncomfortable. I've used just about everything gillette makes, and if it was comfortable to hold, it didn't shave well for me. I've been using a merkur HD for sometime with great results. It's a really nice razor, and I think I could shave with that thicker handle all day without the numbness returning. Saturday I got my first Merkur Futur (thanks Joe), and I finally have another razor that shaves well, and is comfortable to hold. I guess I really will have to try a vision now.