I've been using my M8 and the FM-1 together, they make a good combo.

I bought a Polyend Tracker and it also has a toy-grade build. I love the instrument itself, they just open-sourced the whole software stack as it's going discontinued. But the device itself is cheap and the rubbery coating on the top panel is already starting to wear under the knob where I rest my hand. I want to build a custom enclosure that has a tilted screen, real MIDI ports, and a wooden top with a palm rest when the plastic eventually gives out or gets too gross, quite a few people have done custom enclosures even with internal batteries already.

But yeah the cheapness is an issue. Even older entry-grade gear, while often entirely plastic, is much more robust and with real ports, they often have one of those little plastic rakes that retains your power cable too. A three cent addition I'm sure but one which is great to have.

I already have some groove boxes, what does this one bring to the table? Every groove box is annoying in its own way even the really good ones. I have yet to find something that does it all better than the good old MPC. I need a MIDI event list editor, very very few grooveboxes offer this. Only Emu/Ensoniq, Akai and Yamaha's did. Akai still offers it but I don't think their newer mini-MPC has this.