Flywheel technology has made it a lot easier to create smooth slider moves. Perhaps even more impressive is Cinevates Modo design. This little tool is beautifully simple requiring zero electronics or batteries. Super stable and perfect if you are looking to cut done on the number of items you need to fit into your equipment case.
For all things Cinevate: http://www.cinevate.com/
I was not paid by Cinevate or anyone to produce this review. Just my quick and honest thoughts after putting it to use for a few months. Hope you find it helpful!