I've got it down to 4 different models: Quickie 32 Super Fox 13.5HP Briggs Quickie 32 Ninja 15HP Kawasaki Quick 36 Super Fox 13.5HP Briggs Quick 36 Ninja 15HP Kawasaki Is the 15HP Kawasaki KAI worth $300 more than the 13.5 Briggs ELS? Haven't read anything bad about the Kawasaki other than the muffer might get in the way going under obstacles. The Briggs might have more vibration. I assume Kawasaki is the better engine, for long life reliability, so I'm leaning in that direction for only $300 more. Is one much louder than the other? 32" vs 36" for $100 more? Don't have any gates to worry about. During the mowing season would be kept in garage, but in the winter might be nice to store in walkout basement. But only the 32" would fit through that 36" door. The 32" is narrower but longer, due to the 2 blade vs 3 blade configuration. Any issues with 2 vs 3 blades? Would the 36" cut noticably faster? Do they both manuver about the same? Any maintenance issues / costs with one vs the other? I'm leaning towards the 32" since I've only used 21" and it could fit in the basement, however I can't help thinking bigger is better for only $100 more. OK, this is for personal home owner use. Have a somewhat hilly 1/2 acre lot, with typical obstacles. Currently using a 21" Lawnboy Insight 10687. But getting a little tired of the 2 1/2+ hr mow time. Looking to move up to a real mower. Do have one small area (10'W x 20'L) with a 45deg slope. My Lawnboy can't get up it without lots of muscle. I assume the Quick will be able to climb a steep hill? Hoping the Quick will last a long time with minimal problems. Don't need electric start, and dually out of my budget. I assume these Quicks are a step up from the Cub Cadet 33" WB at Home Depot. Any help picking which Quick model would be appreciated, don't want to miss the current sale prices. - Thanks!