I can say that 1.6 is waaaaaay better for me than 1.5! I actually reverted back to 1.3 which ran awesome on my phone. The phone is snappy, doesn't get lagged down and the battery life is crazy good. I'm talking full day good. Can't believe it really. What a difference. I'm running 1.6 with the default kernel and the Revolution Theme. Well done Liquid and your team. Well done in deed!
Droid 1 --> Droid X2 --> Droid 1 --> Droid Inc 2