Separate names with a comma.
Finally, someone in adafruit thought "Umm MPR121 is obsolete now. Let's make a successor". :P
I heard that there are some arcade machine operators/manufacturers who like to use harder (i.e. require more force to activate) spring...
Sounds like a question I would ask a year ago. So I guess Soon™?
BTM my answer is "doesn't matter on capacitive touch panel". :P