[Jeff Lee]

Advanced offers a 10" Sportsman or Dual 7" Sportsman. McLeod offers a 10.5" (they also offer dual 8" but it is a diaghram pressure-plate). Advanced flywheel and components are custom built to your application all in-house, not shelf items like McLeod. Advanced offers continuous consultation. Good luck getting through to McLeod (now owned by B&M).
10" Advanced is priced the same or nearly the same as McLeod 10.5" (both approximately $2100 with the Dual 7" Sportsman approximately $2900).
McLeod makes a great product. They started the "soft-lok" phenomonen which radically changed the stick-shift drag racing world. You won't go wrong getting a McLeod. Brad Zaskowski has obviously had great results with his McLeod.
And like any good product like McLeod, better ones came later. Advanced took the concept to a higher level in my opinion (and I've run both).
Keep in mind these units are made to fit in a 6.1 SFI bell housing which are in the $500 +/- range. Billet clutches are required to run 6.3 (?) bell housings; typically a $1500-$2500+ unit that will not conform to a stock style floor board / firewall transition.
No, I don't work for either McLeod or Advanced.