Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I was considering the 11 over the Ultra, because of the size and lightest, but I really love the way the Ultra1 looks, and how its held up to abuse by being worn all the time doing everything from lifting, fishing, yard work to banding it on door knobs. Mostly I just want the giant battery life, the most I can get all of the time. I hope the battery itself doesn't degrade so fast.
 
Found this on YouTube hands on. Shows the difference pretty clear!

IMG_3772.jpg
 
You bring up a possible issue I haven’t thought of. Is the Ultra annoying to sleep with? Perhaps I won’t trade in my AW 8 so I can sleep with it?

Never bothered me.

I currently use an U2 for sleep (and home gym) and had no problems.

I think this is quite personal and you can only find out by trying. I personally was really bothered by the thickness of Ultra for sleeping/sleep tracking and kept my Series Watch for this.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.