"Some models you really like" literally describes everything I have that is painted or is ever going to be painted (I do have some models that will never see paint, but they're only kept to cannibalize for conversions). I don't buy models I don't like. I'd never collect an army that had must-have units whose models I didn't like. That's why I didn't play Chaos until 6th edition when they finally got decent-looking Chaos Warrior models, even though I'd loved the
concept of a Chaos army since getting into the hobby in the early 1990s. And why I started a DE army rather than HE or WE, even though I like all three flavours of elf about equally fluffwise. DE were the only one of the three that had even halfway-decent-looking core troop models back then. It's also why every single one of my 6th edition plastic DE warriors is assembled as a crossbowman, because I always thought the spears looked horribly badly proportioned.
My
favourite model changes from day to day and is usually whatever I'm working on at the moment. Or whatever I'm planning on working on next. So "paint something you especially like" is identical to "paint something" for me.
Honestly, it's like people
forget my patron god is Slaanesh...