I used to use Pure a couple of years ago. I found it had some weird bugs that were really annoying, not very reproducible and my shell knowledge was not nearly good enough to debug it. I think especially the async stuff was very error-prone. Maybe that’s changed now.

Powerlevel10k is very customisable, faster, can be configured to function exactly like Pure out of the box and in my experience, more reliable.

I would recommend powerlevel10k over Pure any day. But it’s just an anecdotal datapoint.