Both risers are good. It seems like the Rox ones give a lot more adjustability, however. Motowerk is just raised. Rox raises, but then you can also move the handlebars more fore and aft. I had access to a set of Rox to fiddle with, but I found the stock height was fine for me.
I like the valve stem caps! My mod along those lines will be to replace the rubber valve stems with 90 degree metal ones when I change tires.
How was the install on the Fenda extenda? Does it work? After cleaning all the crap off the front of my engine last year, I think that is now on the mod list.