Can't let it go

Have you got a stamp set that you just can't let go of? I have a few and one of them is Betsy's Blossom. I brought it back out for a class the other afternoon. The sentiment is from another very old stamp set called Live the Dream, that once again I would not part with. I tried one as a landscape layout and one as a portrait. Each has it's own cuteness don't you think?

So what is your stamp set that you can't let go?