I hate to recommend a certain brand of anything because I want to stay nuetral being that I own this site. However since you asked, I have had a few different vapor steamers and dealt with a couple different companies.
I had a really bad experience with the company that makes the Desiderio Vapor steamer. That unit was a poor excuse for a vapor steamer and their service was awful. I sent the unit in for warranty repair at my expense and they billed me for shipping & handling to send it back (which was way more than it cost them to ship it). When I got it back, it was in pieces and had the wrong hose which was torn. They were bad about returning phone calls too.
Ok now that I got that off my chest. The unit I have now is a Eurosteam ES1900. It works very well and the company is a pleasure to do business with. Turn around for repairs is pretty good.
My experience with vapor steamers in general is that they aren't very durable, in other words they break down on occasion. I am considering buying a second unit to have on hand, because I hate being without one when it is in for repair.
Troy