I have a Procaps and you are right, it is great for ground in dog tracks in living rooms. It has the weight to really get down to the nitty gritty but because of that weight I don't like to lug it in unless I know it is going to save me time over just raking. I usually use a 360i but sometimes even that needs some help.How about a CRB machine like the prochem procaps? Or a Sebo Duo. The procaps can really dig that deep crud out of the carpet. It also get the pre-spray worked in on the entire fiber.
Yeah I have seen those too, I meant full size 17inch when I said $1,700 (which I have 2 of but only use for stripping wax) if I'm going to use a 13inch machine I would rather the Oreck since it is orbital and also uses a brushless motor so is zero maintenance.I use a 13" floor machine from Canada $750 new with a handle that goes down so in the van the unit is 33" high x 13" wide and weight around 50LBS.