Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Hi all!!  New member here and hoping for some help.  I am looking at 2 new craftsman power washers.  One is th 7.0hp 2900 psi with B&S engine and OHV engine.  For $50 bucks less is a 6.5 hp 2550 PSI with a regulat engine(no OHV).  I am looking really to celan my deck(rarely) and more for pool area, large stamped conrete patio, dribeway, siding,etc.  I relly like the OHV engine, but the guy at sears tells me that 2900 psi is too high for my uses and I will ruin the items I  hoping to clean.  He is suggesting the 6.5 2550 psi.....is there really that much difference??  I need help ASAP.  Thank you in advance.