Trial and error buddy, unfortunately it's not cheap, but at least you can resell any of these popular rotaries if you're not comfortable with any of them. From my own experience I recommend the Rapier2, best liner I've Ever tried, if they're not available then search eBay, they've been poppin up here and there...ever since I've experienced the Rapiers and the Neo life is good...my next machine I'd like to try is the Bishop...cheerz
