I`ve never used the megs or PBMG ones. I have tried a few waterlesses, though. My current go to is Shine Supply Eco Shine. VERY concentrated and works great. It is a dual purpose waterless and rinseless. You dilute it 1oz concentrate with 31oz of water. It works fantastically. I will try ONR soon. I`ve also tried a sample of UWW and its great.