Im looking for a aerator for next summer for Bermuda turf. Im not looking for a 10,000 dollar ride on unit but just a good 30" or something close to this walk behind. Theres lots of choices out there and honestly I have no Clue what i'm looking for. Any suggestions on a good walk behind that's durable wont beat the crap out of me every day I use it and does a good job? And any specifications on this unit that is a must? Thank ya!