There's a fair amount of options out there.

If you haven't checked the roland MC 101, which can be had for about 350 used, you should. It's only four tracks, but that thing is ridiculously packed with features for the size and price.

https://www.roland.com/global/products/mc-101/

The bonus here is, yes, it's a sampling sequencing drum machine, but it's also got the exact same synth engine and 90% of the sounds of the flagship Fantom.

It's four tracks, but each drum track holds 16 individual sounds/samples, with it's own eq, and you can resample a track to a pad.