I was looking at a couple of Squarp options, as it goes, and the Pyramid looks really impressive.
Likewise the Oxi One, funnily enough (which reminds me both of the Deluge and Norns/Grid). The other broadly similar one I had a look at was the Polyend Seq though don’t know a great deal about any of them.
The OP-Z is an intriguing option. Is it easy enough to see what’s going on in the sequences without the screen?