Maxis Broadband? Or Celcom Broadband?

I am currently using Maxis Broadband myself, however it has come to my attention that Celcom Broadband also provide similar service, but with a better performance. Maxis Broadband is good enough for my use, but I heard a lot of people complaint about it, so should I change to Celcom Broadband? If anyone of you viewing this post are one of the users for both services please leave your opinion below so that I can compare both of them.