Both are well-regarded at TMC, so it really comes down to what matters most to you. Dr Pamela Tan is known for being calm and compassionate, and she has a subspecialty in colposcopy and vulval disease, so if you have any complex concerns she's quite well-equipped. Dr Judy Wong brings over 20 years of experience and has a strong following too, which speaks for itself. A friend of mine went with Dr Pamela Tan and said she felt very informed throughout her pregnancy, which counts for a lot especially in the first trimester. Honestly, both seem solid, I'd say check their availability and see whose consultation style you connect with better.