Well, when I'm not at home, HSDPA is mandatory for me, I can't be bothered signing in to Wireless KL.
The pad is nearly the same, but has some subtle differences (actually the E72 took the E63 keyboard).

Depends on the price, ask for quotation... I bought it 6 months ago and the price difference was something like RM 500... And I also don't like metal casing because of the fingertips marks...