Got a set of R&G heated grips 18 months ago after a cold drive back from France in September 2013 (
http://www.rg-racing.com/browseType/...HG000122C.aspx) easy to install, had them wired directly to battery until very recently when I bought one of Bibio's Gizmo's (great bit of kit). Cheaper than Oxford grips and I am happy with them. Used cheap glue to fit them which came unstuck few weeks back but redid them with same stuff (5min job but ~2 days to harden). Whichever you go for I'd recommend them overnumb hands anyday