Well my 15 yr old 5hp Sears chipper/shredder doesn't want to run anymore so I am considering replacing it with a new machine. Consensus seems to appear that the machines from Mackissic are the chipper/shredders of choice. I use the machine for fall cleanup including some leafing as well as branches as well as the many trimmings from the cutting back of the perennials around my 1 acre lot. I am considering one of the following Makissic machines, the LSC506, the LSC510 or the SC763. Does anyone have one of these machines and what has their experience been? Also the internet dealers I am considering is the Lawnmowershop.com and West Power Tools. Does anyone have any experience with either of these shops? Any other shops I should consider? Thanks for your response!