Hank Knight
I don't like roller stands because, if they are not precisely aligned, they will guide the workpiece in one direction or another and pull it away from the machine fence. Unfortunately, I haven't found a satisfactory option for work that requires machining thin pieces or pieces that need to be fed through the machine on edge, like resawing. I have a ball bearing stand that I use to support wide pieces, especially those that need to be worked in multiple directions. In this example, my ball bearing stand allows me move the workpiece easily in any direction necessary to refine the shape of the scroll, something that would be impossible with a roller stand:

[url=https://flic.kr/p/26JR9E5][/url][url=https://flic.kr/p/26JR9E5]IMG_3914[/url] by [url=https://www.flickr.com/photos/158680038@N03/]Hank Knight[/url], on Flickr

[url=https://flic.kr/p/255Tzdm][/url][url=https://flic.kr/p/255Tzdm]IMG_3916[/url] by [url=https://www.flickr.com/photos/158680038@N03/]Hank Knight[/url], on Flickr