I know Gong Cha and Koi Cafe bubble teas have their own leagues of fans, but if I had to choose between the two I would go for Koi because of its more chewy pearls and richer milk tea (basics people, basics). I do know that Gong Cha is well-known for its special dual-layered milk-and-tea concoction (and has seen many loyal converts in the process), but somehow I'm still not too convinced.
Happy Lemon's Tea Latte with Oreos is a sweet, simple and fairly balanced milk tea with crushed Oreos for you to sip/nibble on. I liked it quite a lot and I think Oreo fans would be pretty pleased too. I would even add that it's much better than the basic milk tea I had from the Gong Cha outlet at Raffles City.
Ion Orchard, #B4-35.
Next to Old Chang Kee and close to Yami Yogurt.
Pictures taken with the Apple iPhone 4.