I don't have the hybrid model. By my ML sounds great. I have to turn the base down though to one click LOWER than mid. Base could be a bit crisper when the system is louder. I haven't tried a cd in it yet though.
I bought my ES with the ultra lux package 18inch wheels. The threw in "free" window tint since I had to wait for the car to get to the dealer. Total time was about 3 weeks. Paid 44k plus tax. I think I got a good deal. Sticker was 49.5