Since I own a PT2100, here's what I think:
The quality of the impression is not very good: for example, here's what I got lately:
http://i.imgur.com/7hrpxc6.jpgBut that's OK, especially for white on dark colors, it can be really nice for a minimalistic finish, like this, for example:
But the most annoying thing is there's a fairly large impression margin, so you have to cut down every label you print, otherwise, you'll have more than 1mm of blank/clear tape around the frame... (that's why I stick with rectangular frames, btw... hate those round corners).
Otherwise the label quality is very good, it's tough and sticks even on textured finishes.