Quick question.....I'm new to the business, have about 35 small-ish lawns in Philadelphia. I need to purchase a small bagging push mower and not really sure if I should pick up a high wheeled or low wheeled. Like I said, most of my lawns are small, many have small inclines and manueverability is important. Any suggesions would be greatly appreciated. Pro-cons of each? Any help would be appreciated. Thanks. Note: already have a 22" throw-away mower with low wheels.