Quest for best Char Koay Teow in Penang

I am on a quest to scout for the best Char Koay Teow (CKT) in Penang. This is suppose to be one of Penang's best dish ever. They even have Penang Char Koay Teow in Singapore. When my uncle from Singapore came back for Ching Ming 2 weeks ago the first thing that he wanted to eat was CKT. He said nothing is like the Penang Char Koay Teow. For him any CKT stall in Penang is good enough as long as it is Penang .. :). This prompt me to scout for top 5 Best CKT in Penang base on my taste. We will start with the so famous Sister Char Koay Teow in Macalister Street. This stall has its shares of popularity with outstation folks. However most Penangites will tell you that is not their favourite stall. I do agree that each has its own favourite hence I am going to give this stall a try. Actually I have eaten their CKT few years back and it was not to my liking. Hmmm no harm trying.