I'm Lost...

I am on UMobile's U58 Postpaid
However, i want to get more data but don't want to suffer the slower speed. Therefore, i'm thinking of Maxis' Internet Value Plans.

There are two plans, RM75 and RM48 which I am considering.
RM75 a month for 3.5GB (extra @ 30c/MB)
RM48 a month for 1.5GB (can buy extra 500MB at RM5)

Since I can check the internet usage by just *100#, which is the better choice?

And!

Celcom has their Celcom First Data plan.

For RM68 they have 4GB internet (wow!) but then capped at 1.5Mbps

Help me decide!!!