my first machine was a pro, in its basic 135 psi form... it was a grat machine and never let me down once. I see now you can upgrade the pro to higher psi which is what i would do. The one i had was great at 25 foot, good at 50 foot, i dont think id use it at more than that..... I now have a storm which is awesome, and also is currently on offer on their website............ the difference between the pro and the storm is well worth paying out for............. i basically use mine from the van now all the time........