What is the advantages of CIMB cash rebates compare to UOB Vox card?
For online spending i think UOB VOX is better since it doesn't have any restriction on online spending. Cash rebates includes airline tickets also while CIMB not entitled.
My own summary.
Well, both have their own pros and cons. I have both to ease my life.

Honestly, most of my online purchases are charged to VOX rather than CIMB CR.
This is my own summary for these cards:
i) CIMB CR is a free for life card while UOB VOX is not, you will need to spend at least once per month (no minimum amount) to avoid RM 6.00 monthly charges.
ii) CIMB CR has no minimum amount for online transactions in order to be eligible for cash back but VOX requires you to spend at least RM 50 per transaction to be eligible for cash back.
iii) CIMB CR's maximum cash back for online transactions is only RM 30 (that means max spending for online transactions is RM 600) while VOX can be fully maximized at RM 50 (for RM 1k of spending).
iv) CIMB CR's has a fixed date of cash back crediting while UOB VOX sucks here and according to T&C, it is by 30th of the following month. Sometimes the VOX's system behaves while sometimes it doesn't. I'm involving BNM in this matter.

(edit: fixed already, usually will credit on 20s of the month)
v) CIMB CR has cross borders charges (read
here) while VOX doesn't have.
vi) CIMB CR's maximum cash back for online transactions is only 5% while UOB VOX is 5.3% (5% - online transactions + 0.3% retail transactions).
vii) CIMB CR doesn't give cash back for flight tickets while UOB VOX gives.
vii) CIMB CR doesn't give cash back for UOBPayOnline transactions while UOB gives (refer to first post of
this thread).
So in conclusion, apply for both.
