I let my spouse, who likes the novelty of a touchscreen, talk me into a Whirlpool oven a couple years ago that is controlled by touchscreen. I had no idea it was possible to hate an oven so much. The only saving grace is that the stovetop elements are still controlled by knobs.
Now, I keep getting invitations to upgrade for the new one. The TM6 is a lot less noisy, and that would be amazing as mine is probably audible across the street - but, and this is a massive BUT: It has a touch screen interface, introduced with the TM5.
NO WAY. The TM4's physical interface is brilliant in its simplicity; every button does one thing, and one thing only; the motor speed knob is big and tactile.
I don't need nor want the complexity and latency of a touchscreen, and dealing with crappy firmware updates. Hopefully I'll be able to keep servicing mine for the longest time.