Porsche 996 Early & Late Model Differences

What are the differences between early and late model Porsche 911 996?

I've now got a 1998 model Porsche 911 and am finding a number of differences with the 2001 model that I owned previously. Some of the differences are quite subtle and others are much more obvious. There are also much bigger differences with the facelifted 911 model that was launched in late 2001 with the 3.6 litre engine and turbo style headlights.

1) Cable throttle vs eGas Electronic throttle system

2) Cable bonnet/engine bay release vs electronic release

3) Traction control vs PSM (Porsche Stability Management)

4) IMS bearing dual row vs single row

5) Engine piston/bore coating