I keep looking and reading, and they keep proliferating. Which one is best, specifically for timelapse moco but also for normal motion?
1. Smooth movement
2. (related to #1) ability to handle the inevitable dirt and detritus which fall onto the rails/tracks.
3. compatibility with moco motor/controller.
5. weight (less is more)
I can't try them all, but if you have tried one or several, I'd appreciate your opinion.