Cheap no-name Chinese computer will usually come to bite you. A Sigma of any level is a safe choice.
I like Sigma computers. Started off with one six years ago and used it until I started doing long distance rides and needed a GPS. Still have it on my hybrid and it still works great. I also like some of the Cateye models.
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HCFR Cycling Team
Ride Safe ... Ride Hard ... Ride Daily
2017 Colnago C-RS
2012 Colnago Ace
2010 Giant Cypress