After over 10 years of ownership, I got mine done a couple of weeks ago (2009 model). I visited
Wizperformance in person, as I was in the area and he did it whilst I waited. The new map is great! (though I should've probably turned off AIS, cos now it coughs, bangs and backfires even more - childish, I know!). I should have done it years ago, it's transformed the bike.
The guy (Grant, I think his name was) is very helpful and from a brief conversation, definitely knows his stuff. Recommended.