I bought the bed redefiner attachment several weeks ago and put it to work the past week on a couple landscape jobs. So far I am very impressed! It works very well and cuts a great edge. Much faster than using a spade thats for sure! So far the only drawbacks that I have found are that it doesnt cut on much of an angle... its more of a stright edge (no that big of a deal) and if the ground is wet the guard will clog up with topsoil and you will have to stop every so often and clean it out but there again no really that big of a deal to me. I use it with the KM130 power head. Think I will be adding the blower attachment next!