I'd have to go for MTM Scott leathers too. Got measured up at the Ally Pally show a few years ago, and the leathers arrived well before trackday season
I've only managed one crash test session in them so far, about 70mph off at Brands. It was wet, so not as much damage as there could have been, but they're just very lightly scuffed in a few places. For what it costs, I'd go MTM every time. Might not have the fancy designer names, but I'd rather have something that did the job than looked nice