The last few days, I've been going to back to an old standby, the Spin Class. For obvious reasons, I'm trying to train for this summer. And I'm reminded how much I enjoy a well-run spin class. I've been trying a few places near me because they often have first-class-free type deals. And there definitely are differences. It might seem like you're just getting on a bike for an hour or so, but there's a bit more to it than that. One of the things I've realized is how a spin class is so different than just riding my bike around, for example for commuting. It's so much more focused and sustained; at least a good class is. So here are some of my things on my wish list for a spin class: first of all, a really good on-bike computer. Some don't have any at all; most have at least cadence. But I want total distance, calories, instantaneous and average cadence, resistance level, and maybe more. On an easy to read display. Also, it's got to be a freewheel-based cycle, which they almost are now. The freewheel is the best replica of riding a real bike. And I want to clip into the bike; ideally with both Look and SPD style pedals. The instructor should be engaging, but not critical; only positive reinforcement and no shaming (I hate that). The room should be clean and smell good and there should be towels available. And the music can't be too loud; I have to be able to easily hear the instructor. These things all seem obvious, maybe, but I've been to several high-end professional spin centers that get one or more of these totally wrong.