I've owned a VP 215 for a while and a VP 112 before that. Going into a the purchase think about the availability of support and parts, parts do wear out with use. You can get just about every part for a VP 215 from vacmaster, but also from several retailers. The company has been around and there are a lot of units out there. Will that be the case for the others? There is a positive buying from a known company that offers good support too. Going into it a VP 215 or bigger is the way to go in my opinion.
The quality of the product produced is superb with the quality chamber vacs. As for a chamber vac being compared to freezer wrap, PLEASE.