Hello redsox1, I can only tell you that I have a plain old wired Cateye on my old hardtail Fuji Thrill, so I', not really in a position to give you much help! Perhaps you should head down to the Mountain Biking forum and see if you get more opinions there...
Welcome to BF!
East Hill
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TRY EMPATHY & HAVE LOVE IN YOUR HEART, PERHAPS I'LL SEE YOU ON THE ROAD...