Anyone have any input on the Tanaka TLE-600 walk behind edger? I have a chance to pick a mildly used one for $225 and wanted to know what everyone thought! I have a stick edger, but have picked up a few new props. with a ton of edging required. I have noticed that some have an extra wheel for curbs. Is the something I can purchase or does it just come on the newer ones? The one I am looking at doesnt have this! Thank you!