Garmins do cost a lot, but when things go wrong they are really good at turning things round. Recently had a little problem with my 610 which was just under 12months old - received a brand new one within 2 days under warranty
Currently heart rate strap is playing up, with spikes all over the place. I have the soft strap - seems its a common problem, they just don't last as well as the standard straps.
I will be going for another trip to Abingdon this year - didn't realise entries were open already.
13 this morning, 9 @ 7:30, followed by 4 @ 6:40. I was wanting to do 9 @ 75%, 4 @ 85% HR - but as I say, technology let me down