my F24 size 10.5 in 2011 l/xl Targa's fit great. I'll check when I get home, but I think I have the heelcup adjusted to the forward most setting. A 9 or 9.5 may work in the s/m if you adjust the heelcup all the way back. Sounds like you're ordering online so you can't just take your boot in and check.
yes, I'am planing to order online