Vacuum Casters

Greetings everyone. A quick inquiry. Of the various types of
manufactured vacuum casters (Rio, Kerr, etc.) are any superior, in
terms of results, to any others? Are any to be avoided at all
costs?

(Please assume that one is not going to build their own.)

Any and all advice will be greatly appreciated.

Joe in Washington where even a rainy day is much better than no day
at all!