Shane,
I know a lot of guys don't advocate direct drive units, but I've had two from HD that have paid themselves off dozens of times over. I have one with a Cat pump and one with an AR pump, and both have worked flawlessly. I also have a belt drive unit that seems to work about the same, except it is alot heavier to move around. If you're just starting out, I'd say the Excell unit will do fine. In time, when the $$ start to flow, you can always upgrade to better units and keep this one as a backup.