Both of my belts are 10mm.
I probably wouldn't even be going for a max now, but I ran a Sheiko template and that's what it calls for. A couple weeks ago I did the two singles at 100% of the max I used and this weekend I'm supposed to do a mock meet and set new maxes.
Sheiko really worked out well for what I used it for. I dropped to a cruise dose of 140mg/week and cut about twenty pounds and I'm really close to my last meet maxes, might even hit right at them this weekend. I'm already happy with what I hit a couple weeks ago, so anything more will exceed expectations and put me in a really good starting point for this next cycle in a few weeks.
Do you do your own programming? I've been dabbling in it and did my last meet prep and am in the process of doing this next one. Running Sheiko was a nice mental break from it and I could just show up and lift, which was nice.