alexban,
I agree, the NG 737 is much noisier than the 300/500. Almost as noisy as a -200. I find if youturn off the recirc fan at the gate you can at least hear yourself think. And yes the new intermittent wipers are much quieter. I think even a Trabant had quieter wipers than the old 73's. It only took 30yrs for Boeing to figure that one out. Now if they would just put the cabin temp controls in the cabin....can't hear the chime from the cold/hot FA due to the noise in the cockpit!
AT