Claw type edger works well for dry locations. Disk type works well when you need to remove the spoils. If the site is dry the claw type edger works great bc you can just blow out the edge to clean it up. Nothing is cheap or easy
Bed shapers are amazing they will save your life. We have 2 we have a disk and a claw. The claw is more for redoing an edge. The disk we use for more new installs. If I had to buy one id get the claw. The disk style is from little wonder. It is a tank it takes 3 guys to lift it onto a pickup truck. The claw style is nice for just throwing on to truck and rolling. I can lift the claw style it myself. U can use the claw style to put in new edges it just bogs down a little. And the claw is from bantam I got it new for $1800 ware as I paid $4200 for the little wonder. The little wonder is self-propelled which is nice but its hard to maneuver. And its hard to train new guys on. Most the time new guys use the disk it looks like a drunk did it. The claw is not self-propelled but its so light its not a problem. The claw is so much more user friendly and its easier for new guys to get the hand of it. U can use the disk for redoing beds but it leaves a strip of sod that you have to pick up. Which is a pain but the claw grinds it up and no clean up so you can move faster which in the spring every hour counts. Like I said Id go with the claw style first. If you do almost all new installs id go disk otherwise claw all the way. This spring rent one of each and see which one you like the most.
Oh yeah I use it for everything even like 30 feet of flower bed u can do about 60 feet a min. So think of it takes you 10 min to bed edge ware as using a hand edger takes 3 hours. U will be more efficient and beat out the guys who are charging $35 and hour to do it by hand. I charge by the foot for bed edging.