If anyone is interested in trying Di2, Mikes Bikes in Aviemore have Shimano's Di2 Demo bike (with matching turbo trainer) in the shop for folk to try. Apparently it's one of only 4 rigs in the world. Only there for 14 days though so don't delay if you fancy a try.
I tried it out today - absolutely amazing (See picture of yours truly on the Mikes Bikes website) I'd heard it was good but I just didn't appreciate how good until I tried it. Love to have taken the bike out for a real ride though.
andy