Vortex Sound Research

Hello everyone, I'm in the market for a poly synth to complement my Sub 37. I'm planning to spend less than 1.000 Euros for a second-hand instrument and there's a Clavia Nord A1 going for around 800 Euros in my city. I always wanted to own a Nord for some reason, but I'm wondering if a Peak or a Prologue 8 wouldn't be a better choice today for approximatively the same price? As long as it sounds good, I don't care if the synth's fully analog or not, I do enjoy an extensive mod matrix and as I do only own only one mono I'll probably own only one poly, so versatility's crucial to me. Thank you in advance for your feedback!