i would consider as below
i would pick celcom if

1) i always have unused quota every month
2) with additional RM120 per year, i can have my unused quota carry forward

I would pick umobile if

1) my quota always finish every month
2) save RM120 per year, since i would never have unused quota

if u always in KL, Klang Valley, then Umobile is best for value.
but if u have to outstation somewhere, then be afraid that ur phone will have 2G line for most.

I think that's for the post paid one, the prepaid Magic Sim (no more xpax) is still 2gb

yes 3GB if u sign up under promotion period latest till 16/7
3 days more to go haha
the speed just great!!