The '853' massive will be along in a mo I'm sure.
Several have had it done...DC, Nelly and Deej spring to mind.
Before I sold my 748 (to Deej actually!) I was seriously condidering it myself.
I've only ever heard good things about it, and Sigma are one of the best, especially if done in conjunction with the full monty set-up.
I think you'll love it
