Assuming you want a computer to just record where you have been ready for upload to Strava. Bryton 20 was the cheapest one I could find that had been reviewed on various sites.http://www.bikeradar.com/gear/category/ ... r-12-46229
Pricing is £75-80, not £140.
The mainstream competition is the Garmin 200 which is £90 ish. [Or your smartphone if the battery is up to it]
Can you upload a route from your pc into the Bryton 20?