Vortex Sound Research

I'm interested in getting a Deepmind 12 after doing a lot of research on synths as my first synth but I came across a PSR-350 for sale locally that is about 13 times cheaper. The guy selling it is basically giving it away for free. I've watched some videos on YT about it and it sounds interesting. Now I know you can't compare the two but what are your thoughts on the PSR-350? I mean as a totally noob, what can I do with it?

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Also, can the PSR-350 do custom patches?