do any of you guys use the Trail Tech Voyager available at rockymmountainmc or something similar? I have been using motionXGPS on my iphone and it works great, but I like the idea of having a device that drops more bread crumbs for greater accuracy and the trail tech seems to be able to sense several different aspects of the bikes performance. Engine temp, air temp, blah blah blah. sounds cool. looking for advice.