Ergo III, lots of adjustment, anyway & everyway you could ever want them.
Rivco look really, really great. But I don't think you can move them to customize fit your legs & style of riding. I've heard of folks dropping their B & the Rivco pegs breaking the cast valve cover. Serious $$$. Moving your feet / legs is a must on a long ride. Both are costly. Dat's my 2 cents worth.