Basically 4 analog synthesizers in one. 4 tracks so you can layer them on top of each other at the same time. can also do drums on the tracks if wanted turning it into a groovebox. Onboard effects/ compression.
Attach a midi keyboard and you have a high class analog synthesizer. This is a no brainer as far as quality and cost
synth, synthesizer, roland, korg, david smith, clavia, nord, Yamaha