I always trusted Cat Eye and ended up getting the Cat Eye 7 cordless. I set it up exactly as they say to but when speed picks up quickly the computer goes backwards before advancing the speed reading! damn it! there is no adjustment I have found to keep this from happening, even if I spin the front wheel, it will show 10, then drop to 2 back up to 9.9, then 9.8 and back down to 4 then back up to 9.7. I am about ready to see how far I can throw this POS but thought Id ask you guys first. Thanks in advance!