Sounds like you'll be happy with the 1.7 DL. It's a solid choice for sure. I had one but sold it so I'd have some motivation when I started to lose weight. Since I dropped the weight, I recently bought a 1.1 DL to replace it and am happy with it. I think the 1.7 DL felt a bit flatter but to be honest I am just as comfortable in the 1.1 and it is a little bit lighter and a little bit more packable. Having said that, I am not a picky sleeper. Enjoy!