Vortex Sound Research

Looking for reverb for my first pedal in a simple volca setup.

I keep seeing the zoom pedals mentioned. It would be cool to have a variety of effects. I was looking at cheap reverb stuff (like £30) but figured May as well spend more for something decent.

Both the ms50 and ms70 are the same price at Andertons, £105.

I see the MS50 specifically says ‘for guitar’, and the ms70 is stereo (not bothered about that). Would the Ms50 sound worse, being designed for a guitar as the input?

Which way should I go? There are so few second hand on eBay. The ones that are there look a bit shabby.

Thanks for any help.