1. Build quality. Touch/feel it and you know, handling is more comfortable.
2. Being able to shoot at f2.8/3.5, performance is respectable wide open.
3. extra reach between 45-54 is useful on many occasions
4. AF faster
5. colours are better (subjective, my personal views only)
Thanks dude...

Noted. Faster AF? Hmmm... i already feel that the 14~45 is pretty ok, that means the 14~54 must be great by my standards.
Regards,
Eric
