I have only ever used the Hill-Rom Vest, and it's the vest used at my hospital - UCSF. I don't recall having any other option, and this brand has worked very well for me! The company is very helpful and accommodating when I need replacements. I have only had to change out the vest once, after getting an error message years ago. They picked up the old machine, vest and tubes included - and replaced it all with a shiny new one! I've taken it around the country, on family visits or camping trips, and one time overseas, and it is still going strong!