Ok....been using the Tanaka TLE-600 but wish it had more power and weight for really nasty thick over grown edges. Ive though of adding a weight kits to the unit but still the power factor....? The 600 is great for moderate edges and touch up. I use an Echo PAS 265 with the curved shaft stick edger attachment but I only use it it in spots where I cant get the TLE-600. So.....is there really any advantage of the GX120 powered units over the Tanaka....? This question if for those who have used the TLE-600 and the other GX120 powered unit out there. Every unit with a GX120 weighs 20-30 pounds more than the Tanaka. I have an old 30+ year old Power trim with the original tired and weak brigs on it...thinking about repowering it with a GX120 conversion....? Ultimately I just want the fastest WB edger for overgrown edges in production.