Regarding noise: I have gotten used to the Prius being dream-like quiet once I reach driving speed, and so consider it "noisy" when accelerating. It is not, really, just in comparison.

I seem to remember a thread over at priuschat with people adding insulation and reporting good results.

Audiophiles complain that the sound system is sub-par. It seems to be the speakers and not the amplifier, so that is amenable to correction I'd imagine.

My wife had been lusting after the 330 for years, but is now *completely* satisfied with the Prius. Whew!

R2-E2, 2G Prius.
Highway/City/Husband/Wife MPG: 56.5, as of 12/2005, 26K miles

Jac Nasser, Ford President: "We are planning to launch a hybrid version of
this car [P2000] within this year [1998]. We will also make FCEV available in
2004."