I've got a good old Wacom Cintiq 21UX chilling on my desk. And by "old", I mean I bought it nearly 12 years ago. It still works just like the day I got it.
Before that, I used to have a cheap, plastic-y A5 sized knock-off tablet that felt like carving hieroglyphs into stone with, and in college the school computers came equipped with small Wacom Bamboos.