I'm thinking of switching from computer to GPS myself for my distance bike. I know when my lil' heart is beating fast... I have cadence on my light bike that I also use on the trainer in winter ... and it tells me I really oughta always pedal faster (when I think to check it tends to be running 61, almost always ). I like to go long and far and after a while all the cornfields look the same... do you like the etrek?