Best? ...what is your definition of best ? Different people have different expectations of something.
Are you looking at the percentage of PSLE passes and distinction ? Are you looking at schools that offer all-rounded prog ? Are you looking at schools with good value-addedness ? Are you looking at neighbourhood schools with very hardworking teachers ? etc....etc....
Once you have gathered those info, perhaps you can determine what is best for your child.
A rat race environment is just so stifling for me.