Yeah, switching to weekly is probably best if you weren't in the old RM25 per month plan like I am. Currently if I add RM5 3 times that'll total to 40GB for RM40 per month too, just like yours. 

It's not the unlimited Burung Hantu we used to have, but I'll stick with Celcom for now since I think the price is still rather fair. I just remind myself that while the weekly/monthly sub itself is rather pricey, the Burung Hantu sub is still rather cheap... RM50 for 100 GB. That's way better than when I use p1 in the past that's about a hundred per month and they have a FUP of like 20 GB before throttling.