My reason is actually a story.
One day, DW felt like eating ice-cream. He went to an ice-cream store called "STI etf". Before DW can place his order, the store owner scoop a little bit of all 30 different flavors equally and put them in a big cup.
DW said, "but I dun want all 30 flavors......I only like certain flavors "
Store owner replied,"You have to buy all 30 flavours. You are not allowed to choose."
So, DW went to another ice-cream store called "D.I.Y."
This time DW asked the owner whether he can choose his favorite flavors. The owner agreed.
So, DW happily choose his favorite flavors, strawberry (Singtel), mint (starhub), orange (M1). The owner asked, "what is this ice-cream called?"
DW replied with a big smile, "I call this 'Power of CD' ice-cream"
Of course, there are also people who love to have all 30 flavours. LOL....

So, you have to ask yourself, do you prefer to choose your own flavours or you dun mind having all 30 flavours?