Yeah don't let us talk you out of them. You seemed to be looking for a higher frequency, that's why I chimed in.
It's funny, I still use the PCS fitting method for flex, because its results have always matched up perfectly with my own feel and swing. Since most will never have seen it, it uses club length and speed, plus 3 choices for Tempo and Release, which their spreadsheet calls Transition and Acceleration. It gives the result as something like 4.5, which you would then look up on a CPM table for the club lengths being built. It has always put me right in what I already have found to be my sweet spot.
There are a lot of people who pooh-pooh the idea of fitting by butt frequency, but for my swing it's a big part of the feel.
I have the little spreadsheet. Is there a way to post it here for download?