We've tried a lot of different band setups and have found the Borg Warner solid flex band to hold up to locked 2-3 shifts better then any of the OEM style bands with only 8 rivets. The Borg Warner band has 10 rivets holding the anchor to the band vs 8 on the OEM style band. We have seen 3 of the OEM style bands (friction material irrelevant) break in half along the top row of rivets, we have yet to see the BW with 10 rivets fail.
The Rigid bands tend to burn the front or back of the band off from getting into a bind and not being able to flex and apply the whole width of the drum. Most of these problems were only found on 900+HP trucks.