The main reason I use silicone is because I’d always assumed that every company had their own sized response groove and I didn’t want to have to buy a set from YYF, YYFriends, CLYW, OD, etc, etc. But if they are standard and I can just buy one kind and not worry about it.
If they are standard, is there a year when that became more-or-less a thing? Are they mostly standardized but with some exception companies? Response-sticker aficionados, do you have a favorite brand?