I bought from Slims Detailing and I got a package of their own machine (can't remember what it is rebadged), a bag and some pads, but I also bought the Chemical Guys hexlogic pads. I use the Meguires Ultimate compounding and polishing products.
The DA is good for the faster speeds but that it only had throw and doesn't rotate at slower speeds so it doesn't help me wax, which Inow only do by hand. Maybe a higher power one would be more effective in this department.
The compounds are really impressive and the pads are easy to get flat. The hexlogic are also particularly good in concave areas.
I then have a few Dodo Juice products for quick interim polishing after a wash, quick detailing and exhaust polishing. Their stuff is fantastic and also smells yummy. There's a fantastic dark wax I use on my black paintwork. I'm also really tempted to try it on my newly slightly blue light silver paintwork to see if I can enhance the tint.