I have a small part-time lawn business. I have a big Skag, plus an old 21" 2 cycle self-propelled Lawn Boy trim mower that I love. The LB finally wore out. I'm really partial to Lawn Boys, so if possible I want get another. New 2 cycle mowers, as I'm sure most now, are hard to come by. I managed to find a dealer with a new 10550 (aluminum deck) 2 cycle self-propelled. It's not the commercial model, but my old one wasn't either and it lasted for years. I talked to several seasoned lawn mower mechanics about the 10550. I was told to steer clear of any 2 cycle Lawn Boy made in their last couple of production years. They said the EPA requirements resulted in LB using carb jets that were way too small and clogged regularly, along with some overheating problems. One mechanic/dealer said the last 2 cycles Lawn Boy made were absolute junk. He didn't mention any acceptable modifications. He suggested I move to the new style self-propelled 4 cycle Lawn Boy model 10695 (steel deck) with the Honda GCV 160 engine. I have a couple of accounts with small hills-say 20 degree inclines. I was told the Honda 4 cycle engine had a capable enough lubrication system that these hills wouldn't pose a problem. I'm not as sure, which is why I kept my old 2 cycle going as long as possible. Has anyone tried either the 10550 or the 10695, or another Honda GCV 160 equipped SP mower with moderate hills? Were the last 2 cycle Lawn Boy engines made as bad as these mechanics are telling me? Is there any other 21" SP trim mower I should be considering? I love Lawn Boys, but perhaps I need to consider others as well. I'd appreciate any input on this. Thanks.