I've found the 10-speed in my new Mustang to be calibrated pretty well. You do get an impression of it always shifting in Normal mode, and a little slow to kick down. In Sport and Track modes, it seems to shift more logically and offers quicker response to the throttle, nor does it labor the engine by selecting the highest possible gear at any given speed. While the actual shift speed is decent in Sport/Track, I would prefer it to respond quicker to manual inputs, especially when you have so many gears to get through. Oh, and I would like the option to have a current gear displayed on the cluster, this only happens in manual mode. But overall, its been much better than I was expecting, and those rev-matched downshifts are epic.
The 10-speed in the Ranger is a different story. On the previous model, I really don't like how it gear skips, it makes for a less refined driving experience as it labors the engine too much. It's also woefully slow to manual inputs by that stupid rocker switch on the gear shifter. I really don't know why they went with that layout, models fitted with the 6-speed auto had a manual mode using the gear lever in the correct orientation, push forward for a downshift and pull back for an upshift.
On the current Ranger, they seemed to have reverted back to sequential shifting, as in not skipping gears. To me, this is more natural feeling as it doesn't labor the engine as much going from, say, 3rd to 5th. I will say, both previous and current gen Ranger, you can toggle the manual shifter without selecting manual mode, this will initiate a current gear position on the cluster.
Overall, I just wish Ford would stop being so conservative with shift response in manual mode on these transmissions. As I said, the actual shift speed is very good, but they take forever to respond.