I'm not the most induced of gym wizards but a while ago, I had personal trainer, who freelanced at the bigger gym in the area, but operated from his own personal room on a one-to-one basis.
'What, pray tell, is Spinning?' I asked him one day.
'I'll show you,' he said, and ordered me from my running on the treadmill onto the exercise bike. What he did to me then for afull five minutes made me want to bleed from my eyes! And who rides a bike like that anyway?! It's a traffic hazard, LOL.
In the long run, if you're not a fan of sweatin so much you have to scrunch your eyes shut whilst simultaneously inducing your own lungs to tear free of your ribcage, avoid spinning. 'Tis the devil's work.
Stick to running :)