I can tell you that the size 8.5 thirty two tm2's I had were too big. The size 8 thirty two TM3's are better but still have too much volume in the heel/calf area for me. I used to have a burton ruler in a size 8.5 that felt way too small. My toes would actually stick out of the liner of that boot. Truth be told, I don't think I ever tried better insoles in the ruler's which might have really helped, but this was a couple of years ago when I didn't really know much.He later said you measured wrong and it's actually an 8.5
I agree with the wrong measurement though, you shouldn't try to make it smaller, you want the maximum number you can get. No pressing the heel, no lifting the arch, fully weighted, knee bent slightly.
His instructions were to kick your heels back. When I kicked them back, that's what I got re: size 8.
I think I tried a size 7.5 TM2 and that felt awful. Maybe a size 8 TM2 would have felt better than the TM3 due to the liner.
I have a set of size 8 thraxis right now to try on, but I think I'm going to have an issue with the boa reel digging into my ankles. If that does happen, i'm going to just order a set of ride lassos. If memory serves, I had tried on a size 8 last year sometime and liked it. I can get a set for a decent price. I guess it's the only known quantity at this time.