Just received my Shimano RS80's that I ordered thanks to the link from this thread! I'm hopefully going to get to weigh them today, and we'll see if I can sneak out for a nice 2hr or so ride to see how they feel. Going to try to do 5-10 miles first on my old wheels, then return home and swap out, so I have a nice back-back comparison.

Overall the quality looks excellent. I'm happy with them, and at 145lbs, I think the 16/20 spoke count will be fine for me, but I'd be suspect for anyone at 200.