subq
4
only you will know 
I had an OT before I had an A4 and the UI wasn’t exactly the same…the workflow is kind of similar though (I prefer the OT).
I like both and wouldn’t get rid of either…you can expect the same sort of menu diving, shortcuts, sequencer action, and some nice sound synthesis.
If I had one complaint about the A4 it would be that the screen is so tiny with lots of menu diving…however, that complaint holds true across all my elektron gear. The instruments are good enough that I overlook that drawback on all of them.