ended up getting those k81s and broke them after a good year of usage.
My current headphones are the K240s
(amazon link) with replacement velour pads and a replacement braided cable. I think altogether cost me about $80-100. Neutral sound, so if you listen to music with a heavy emphasis on bass you'll probably want something different. It's semi-open which means that some sound will leak through (so people will kind of hear what you're listening to) but if you just use them at home its fine. Because they're semi-open they have a bigger(?) soundstage than closed headphones (This means that you can sort of differentiate where sound is coming from, which can be cool for games where sound matters and good for just general music-listening). Apparently they're really hard to drive, but I've never really had an issue with that aside from it draining my phone battery and not being as loud as other earbuds or headphones.
If I wanted to upgrade I'd probably get an open set but I'm probably good for a while. If anything I'd just want to get a pair of closed headphones to use in public
(probably something like this)