So my take.
Rollers are nice for the novelty and for a new rider are probably not a bad idea.
Magnetic I have no experience with nor with wind.
Fluid are great as far as trainers but bear in mind that trainers basically suck.
If committed to a trainer the Kirk is a great machine with great support and the Kirk Rock n Role to me makes the trainer bearable for up to 2 hours. With the other fixed trainers my butt wears down by 1 hr.
however riding outside, even in winter , rain, and dark far surpasses riding indoors.
Cheers and good luck in your decision, apologies for the snarky and sarcastic post above
