Today I drove the 330 6spd. sport pack. It was at lunch in traffic in a combo mid-town/residential area, so no twisty roads or high speeds. Here are a few quick observations:

The clutch was nicely balanced, neither too firm nor too easy and the engagement point was precise without being too fussy. The shifter was great - I never came close to missing.

The ride is just right. You feel the road but are never bounced or jarred. I went over several stretches of rough pavement with no discomfort.

The torque curve is indeed flat - the engine pulls strongly from 2000 - 5000 (too much traffic to go higher). I didn't feel the hesitation issue but traffic and lights precluded much hard acceleration.

The turn signals are a bit hard to get used to. They go on without clicking into place. I kept fumbling around to turn them off after a lane change.

I set the stereo to flat and music mode for Logic 7, then put in Santana's Abraxas. I kept the volume down for the sake of my passanger salesperson and talking but turned it up for a few minutes. It sounded strong and clear without any gimmicky surround quality. Definitely an improvement over the old HK premium setup.

The car is very quiet on the road - quieter than my old 5 series. I think this contributes to a feeling you are going more slowly than what is actually so.

It reminds me a bit of an M5 I once drove (except for the power) - smooth and refined, easy to putt around in, yet ready to leap forward whenever you wish. I had no complaints.