The Hapax and Deluge are both above $1000, so more expensive than the €350 proposed by @Mister_Wood. The Oxi One is €650 or so.
The RK-008 (for €360) is probably a bit simpler to learn compared to the Pyramid, because it has a lot less features. But if that is you cup of tea, maybe an original MMT-8 is also an option?
One decision you need to make is how much you would rely on the display for editing, e.g. the OXI One has a really tiny display, and the RK-008 as well as the EP-133 have displays that are not even pixel based, so both can’t display several recorded events simultaneously, let alone a piano roll (as e.g. Pyramid can).
Edit: here’s the thread about the Squid it seems one can get those used for under €350 these days.