Wind/mag trainer features

This is probably a FAQ but I’m going to ask anyway :wink:

Also, I posted this on r.s.triathlon so apologies to those who read both.

I’m considering buying a mag or wind trainer. What features should I be looking for? What are peaoples opinions of which is better?

Wind, Mag, or oil turbine?

Rim drive or tyre drive?

Cheers,
Brad