I'm happy to be corrected, but aren't TRP and Tektro just different brand names from the same manufacturer?
I had the CX9's on my race bike for a bit, they worked well, although they were no use in really muddy conditions, but they weren't any better than cheaper Tektro mini-vs I had on my Pompino.
There's a good guide to mini v's here.
I'd get those Tektros with the short arms at the bottom and fit decent pads and an adjustable noodle.