I really like the Edge 2000 pads as well. The pads are easy to work with and both sides have a polishing surface. The adapter scared me a bit at first, but after receiving them and using them, I saw that it's a really nice design that won't put your paint in harms way. Not only does the adapter make switching a pad very easy, but it perfectly centers it every time as well. On top of all that, the customer service is top notch.
I've heard great things about a lot of different pads, but these just happen to be my favortie.