I've been lurking on autogeek.net for the better part of the year so here's my first posting.
I have the Wagner 905 which is identical to the McCulloch MC-1275. It offers 41psi at the tip and 212° in the tank, according to Wagner's tech support. I've used it on my car and in my home testing its effectiveness in cleaning/detailing. It's just OK. The 905 has two controls: power on/off; steam on/off. It makes wet steam which is leading me to consider a "real" steamer, like the VX5000 or the Vapor Clean Pro 6. I know the price difference is considerable (I can buy 6 Wagner 905's vs 1 VX5000) but the price has to be a secondary reason to buy such a device. How it's intended to be used and what is the quality of the unit and steam produced is more important to me.
In retrospect, buying a low-cost steamer that does not provide what I need (dry steam, higher PSI, greater flexibility and build quality) is simply an economic experiment. If you're serious in using steam in detailing a customer's car, which is a growing trend, get the best you can afford. After considerable research and Renny Doyle's emphatic recommendation, I'm going to buy the VX5000 soon.