I have the karcher 48 from gutter cleaning systems, bought with poles and a genny, can't remember price, around £700 for the full set up. I use it all the time, plenty of power, works a treat on domestics, not to big and the genny is not to heavy!! its great to have the genny so you don't have to worry about power. On the commercial side of things, i've use the Karcher on office blocks, 3 story, just like a big house!! arms take a beating tho!!! all other commercail i've done i've just used acces platforms. One other thing, don't worry about a bullet cam, the mirrors you get from gutter cleaning systems are great!! quick to use, and you can see much more than you think, you can even show the customer, i have a spare clx22 that i use with the mirror, i take this along when i quote. The only thing i would like to change is the vac hose, it has a mind of its own!!! but thats the only draw back for me!! hope this helps!!!
Mick