Looks like the new units have more power meter provisions based on DCRainmakers article, will have to give that a good read later.
lol I was only joking, but if you want first dibbs your very welcome soon as I can lay my hands on a 810

I will send you a message at the time and see if your interested..
My 800 is only three months old as well 
typical
I have wanted one for a while, but the rumours of an Edge 900 held me off buying one for 2 reasons:
1) The inevitable bargains that can be had on the old unit when the new unit comes out
2) Potential features that might make me want the new unit and end up regretting the older one when having to sell it at a big loss.
I am currently using an Edge 500 and have been for near 3 years, it has been faultless but I am beginning to want the mapping features!