is 2 ox worth $60.... That is something for you to decide (it wouldn't be worth it to me).

Comfort is also a very personal decision. I can tell you what I use (REI Stratus), but comfort isn't entirely determined by pad thickness. Different people find different baffle systems more or less comfortable. Fabric (and whether it crinkles) can also be important.

My pad has a slightly larger outside baffle that keeps me centered on the pad as I sleep (the Expeds do this too). I like that feature. Some people really like horizontal baffles (thermarest) and some really like internal baffles (high end big agnes). It is hard to tell you what you will like. If you can get to an REI they have pads you can try out before buying. I found that a very enlightening experience.

I wouldn't completely throw out the r-value for your pad either. You never know when your going to get caught in miscalculated or off-nominal weather.