For next year I was thinking of getting a chipper/shredder to help with clean ups. Just something to handle basic lawn debris and some occasional light tree pruning etc. While looking through catalogs and on-line, I see that there are a few manufaturers that make a lawn vac with chipper/shredder built in. This looks ideal for spring/fall clean ups and tree/hedge trimming. Anyone using any of these type products? If so, which brands do you like? I kinda like the Troy-Bilt unit. Chips up to 3.5" branches. Any input? Thanks.