I'm on my third PW for home and before that had two that I used commercially. Both of those had CAT pumps and hot water. Great but IMO a little over the top for the average home owner. However I do agree on buying the CAT pump. The 3 I've purchased for home all had the General pump and none have been worth a toot.
Also have to agree with jbinwa about the concrete cleaning issues. It is a sure way to failure when you blow away the cream and expose the aggregate. Just come look at my driveway apron.
