Vortex Sound Research

I always wanted a synth and I saved money for this two options.

I first watched the Volca FM and it is basically a DX7 but smaller and cheaper and I tough that this connected to a 49 keys MIDI keyboard would make a great match.

But I also noticed that this option is $30 less than a Monologue so I don't know what to choose as my first synth.

I just want a synth for fun and to learn how to play and compose melodies. I love synthwave, vaporwave and 80s music. So I don't know what is a better option. I live in Argentina and Korg is the only brand that has a reasonable price here.