Son #1 is a full-time wrench. He says if it's not a 4L80 or an Aisin, it's trouble. The light duty DodgeRam tranny is so bad that mechanics have running jokes about them. At least DodgeRam made them easy to swap out.
Somehow Ford has managed to avoid selling us any truly problematic trannies. Even the odd duck A4OD works OK once you know its idiosyncrasies.
I'm not ready for a 10sp tranny. But they are selling well. We'll see...
Reno in Central Texas, 86 F250 XLT Lariat eclb 2wd 6.9, plus 2 Bricknoses, 1 Aeronose that's getting a Bullnose front clip, and parts trucks. Busy lads, father and sons wrenchers.