Excellent advice there!If you are going to be doing commercial carpets, buy a Cimex and learn how to use it. Buy a single cord portable for stairs and spotting. The hos vibe is also a good encap machine but a Cimex will give you more cleaning ability for the money. Buying a used truck mount for under $10,000 is risky unless you're good at wrenching on things. There are some bargains out there.