I have a 2004 Carrera 4S, no Ferrari needed :)
However, there is a difference between performance driving an having an underpowered engine. If I'm driving in traffic and step on the gas to change lanes there is about a 2 sec. lag before the engine kicks in.
This is not trying to take the SUV to 190mph or to beat some 0-60 times it's a matter of safety.
I love the RX-330, and our old RX-300, but if I could change one thing it would be drop a new engine in there with about 280HP.
ymmv,
Rob