I'm about 30 days into using mine. I did the buy once/cry once and bought Vectric Vcarve Pro. Learning this is complicated enough, without having to fight software. If you can use PSP or PowerPoint, you can use Vcarve.
The machine is POWERFUL. The stepper motors are strong, and if you don't respect the machine it will snap a 1/4" shank bit in a hearbeat. That said, it's incredibly stable and I think it's easily the best 'hobbyist' CNC you can get. If you add a 2.2HP 220V spindle it's getting into the power and performance of a commericial CNC.