I have never used a polisher or any other power tool on my car. This Mequiar's DA is so easy to use. First I clayed my car then, used The Meguiar's DA with Menzerna SF4000, I wiped it all down by hand with rubbing alcohol. You have to make several passes in a small area. Takes a lot of time. Watch the Auto Geek guys or Meguiar's videos for pointers. The finish was high shine no halo almost perfect. I put Menzerna PL sealant on by hand two coats a day apart. I Plan on putting a Wax on top of that. Maybe Meguiar's NXT. But at this point I can say the paint looks better than new. My car is a 2007 Ford Escape Hybrid. I am a Grandma and got detailer results with this tool. I have always washed my car very carefully so it was in good shape to start with but those little halos you can see around the sun when you look at your paint, I had some and now they are gone. I could never have made a difference by hand. I did take out slight scratches as well. I went and bought a cheep plug in drill from Harbor Freight. You could use a battery drill but I didn't want to wreck ours. I checked the shine by holding a bottle with words up to my car and looked at a before and after spot (yes of course I left a spot not polished to impress my husband) you can clearly read the letters in the after and in the before area they are all blurred. It is really strange to walk by the car and see the reflection of your feet go by. I love the DA power system and the pads are great to use for hand applying sealants, waxes etc. I would buy the pads to use for hand applications now that I know how they feel and work. Easy to wash out. You could use the Meguiars DA to apply sealant and wax they have plenty of videos showing how. I just used the pads by hand for the sealant and really they are a nice size for the job.