8 Speed Auto for HD trucks

I use the lock out feature when towing heavy. I just lock out 6th, 5th is normally good, with few downshifts, unless continuing rolling hills, in which case I lock out 5th, stay in 4th. Towing heavy with same truck/FW, but with 10-speed, I'd have to lock out 10-9-8-7-6 until past hilly area, then add back 6-7-8, until headwind, lock out 8-7. Maybe most will just not use lock out, let the 10-speed continuously shift, call it good.

Not against change, or improvement, but my Ford 6-speed is a great, user friendly transmission, with spot on gear spacing.

Jerry