Edge 2000. Love the contoured outside edge. allows me to buff side strips etc and really tight spots
never used a black or yellow pad. the blue and greens do the job nicely.
Have used mine alot lately and they refuse to reduce in size (thin out)
Next fav - 3M black waffle pads
Meguiars pads come in only two types which for today's paints and products will not do the job and the cutting pad is a little bit too rough IMO.