Not a super important question, but I'm just killing time before my next big tour... Vancouver to Panama and back starting in September. Pondering a new pad...

Looking at pads anywhere from R-Value of 2 to 5.7.... Mostly at the Thermarest NeoAirs and similar. Right now I sleep on a foam pad, with only a R-value of 1.6, but it is a little cold sometimes, never done much winter camping, but I expect that might change. Is there such a thing as too much r-value?

Any thoughts on r-value and any other suggestions on new pads appreciated.