Hi fellow slaves, looking for feedback about the ZTR curb edgers like the ones Walker uses? Are they the ducks nutz, or pretty ordinary compared to a hand held blade edger? The use is for very large curb jobs, don't want to emply so hoping a mower mounted edger for miles of curbing, paths etc will be worth the investment... I'm in a sandy area and the grass is bermuda....real ferral bermuda too lol. So....have yas seen these edgers in action, and how did they perform?