I have been going back and forth and cannot decide which to purchase. I am currently looking at the Vapor Chief 100 refill and the Dupray Hill injection. There does not appear to be a huge difference in terms of specs, warranty, or even attachments. I have read most posts regarding steamers and read Mike’s reviews of them multiple times. Those who have either on of these two machine, I would appreciate the feedback. Vapor Chief has, from what I can tell, an honest comparison on their website comparing the two. It appears both can use tap water, PSI difference is only 12, and degree temperature difference is only 10. Does the Hill have any significant advantages other than “detergent” injection?