Thanks for the input fellas-much appreciated. I'm pretty sure moving on to the KTV is the right move.
I'm usually an 11/11.5 in most shoes and was glad to have gone with the 10 in the RADS. My toes were at the end of the booties (comfortably), but when I'd step into the shell they were perfect. So, hopefully I can get into the KTV's before the season starts to get the right size...oh, trying on wakeboard boots in the store...always a blast. Although that experience has improved since the days of binding slime in the store with someone standing on the base to help get out.
The reason I'd probably count out the '12 RADs is the amount of time I spent playing with the string, readjusting while riding-the fact that the lacing is now separate may have solved that, I suppose. I LOVE the concept of simply buying the liner when it wears out, which is why i bought the RADs in the first place, but it was pretty annoying to see how much the heel lost it's shape/cushion after literally a dozen sets. I have heard that also has been solved....so we'll see.