Rotovator suitable for communal use

Hello,
Can you help? I could do with some expert advice.
I'm on an allotment site that came into being last year.  We have about 70 plots that measure 8m x 8m.  Most people have single plots, some have doubles.

It's possible that we might be able to get sponsorship for some communal equipment.  One thing that's being proposed is a rotavator for communal use.

Can some kind soul recommend an appropriate type of machine so I can get costings done?
I've never had a rotavator of any sort so I have no idea what would be suitable. Also if you think there would be ongoing costs such as maintenance, parts?
Many thanks!
Penny

Just so you don't think you're being ignored, I have read this but I don't have the knowledge of various rotavators to advise.

What I do know is that several threads similar to this normally mutter things like "you need insurance and to train everyone that use the rotavor or you could end up being hammered by elf-n-safety so it's not worth the hassle"

Not helpful, which is why I hadn't replied until now.


¥