If you want to go Thane or beyond Thane (towards Kalyan/Vashi) better deboard at borivali and take MSRTC Hirkani(asiad) buses or nonstop buses which plays between Borivali and Thane at regular interval not the BEST's AC(they took around 1.30 to 2 hrs ) buses because they are relatively slower than MSRTC nonstop buses. It wil take around 40 to 50 min. where via Dadar it will take around 1 to 1.15 hrs also help you to avoid crowed at Dadar. MSRTC ST stand is situated at east side of Borivali station.