Yeah, true. I guess where I was coming from is that if you're a wee bit tubby like me a slimmer fitting/cut suit often means you sometimes have to size up to get it to fit properly as your normal size just won't be flattering but that in itself can leave other problems. Having said that, I've always bought the same size in the suits I have from RRL so it sounds like you know more about this sort of thing than I do (which isn't hard to be fair). I was just trying to say that most of the suits I've tried on have been my normal size but a couple have been a bit slimmer in both the jacket and the trousers so its hard to make a generalisation.
I'd also agree that the quality is top notch. The fabrics are always really interesting that you don't really see anywhere else. I did try on the current tweed suit the last time I was in. Almost picked it up, especially as there weren't many left but I think I'll risk leaving it to sale time.