I finally took the plunge and ordered the above after working with regular sized pads for the past 4 years. All I can say is WOW what a difference. I used Menzerna IP on the orange pad on my black G35 on some moderate defects. Two applications and they were absolutely gone. With the old setup it would have taken 5 applications, and it would have been a real pain. The 4" pads are much easier to deal with since the PC doesn't bog down with them. I followed up with Final Polish on the white pad and I am very impressed. If you are considering making the change to the 4" pads, I say go for it.