I like most any pin, and that is what I USE to collect.
Now I really do try to stay in theme. I needed traders and even went through some of my books and thinned out those I really did not care much about.
I still have several themes. To name a few:
Jessica, Roger
transportation
rides and attractions
castles
restaurants
pirates
I stll have a large Toy Story and Monsters collection. But rarely buy for them any more. My binder on both is overflowing. Once I have to expand into 2 binders on a lesser theme, I slow down buying on that theme. That's my new rule!
Holiday pins I am only buying what I really like, and even limiting that.
We were in Epcot NYE. I bought the castle jumbo (LE1000), the Goofy and Donald NYE, and Epcot New Year pin.
The old me would have bought all NYE pins, and extras.
Although I did buy one extra jumbo castle.
I generally stay away from characters. I have too many Tinks now. I only buy those I really like.