Hey meads,
I have been in business for four years and have been using a home depot devilbliss 3500, 3600, 3700 psi cold water portable unit at 4gpm for $995.00. The honda motor is a workhorse. The pump is a Anovi Reverberi which I have rebuilt or replaced a few times. I am very happy with the motor but it seems like I have to replace the pumps every year. Not to bad considering I use the machines 40+ hours a week. For the money to just start out with, I think this would be good for you. I am now looking to get a hot water skid mount. I change the oil religiously. They still start up at one pull. Definetly a good machine for the money.