Wahoo have started Black Friday early today and I thought this RFLKT Bike Computer was the pick of the bunch. Currently still on sale at Amazon for £59.99 and £71.99 at Wiggle but I guess could come down later in the week.
They also are offering the Tickr Run HR Monitor for £49.99 rather than £64.99.
Note postage is a steep £8.99 unless you spend more than £55. You might want to also get an HR Strap or Speed and Cadence sensors to take it over the £55. I still got the RFLKT as it was still nearly half price and I've wanted one for a while, but you takes your choices.
Seems recent updates have much improved this device certainly for iphone users, but I'll see when it arrives.