I've tried a NeoAir Trekker, and it was great. I then checked out the XLite, and I was also happy with that.
I am 5'9", and I tried both of these in the large/wide size, because I want to be comfortable during my sleep, and I don't want limbs to hang over the edge while sleeping. By going with the largest size of the XLite, I didn't have a problem with the tapered shape, due to the extra width of the design in the large size. It was my Godlilocks pad when considering weight to size, at least as far as width goes.
On the other hand, I really didn't need the full length. If only they would make this with a regular length and the wide version, that would be the end of the story for my decision.
I've been reluctant to try the Xpeds due to the lengthwise baffles, which has been a source of complaints that I have read. Also, being a toss-and-turner, going back and forth between side, front and back during the night, I am not so sure how much I would like the raised outside rails. On the other hand, the Hyperlite is available in a wide version that is the regular length of 72 inches instead of 77, which would free up a little space in my tent. Also, it is slightly lighter than the XLite, slightly thicker, and has a slightly higher R-Value.
Has anybody tried them both out?