13 or 17 inch 175, that is the question. Going to be getting a new 175, current one too heavy for my liking,, over 100 pounds. So it might just come down to either the 13inch koblenze at 61 pounds or the 17 inch at 82 pounds. Actually a 15 inch would be my sweet spot. Either way I will add a solution tank and along with a pad driver a carpet brush as well. My only concern with the 13 inch is the motor only being 3/4 hp instead of 1.5 hp on the 17 inch and if i could use a 15 inch carpet brush on the 13 inch with it still having enough power to turn it without over working it