Ok ok.
From Boon Lay/Jurong West/Jurong East u can take either 174 or
502 for a quick route to Orchard/Suntec. 174 applies to Bukit Batok
as well.
From Buona Vista u can take 111 which is quite fast to Orchard
district. From Clementi, u have 7 to Orchard too.
For Teban Gardens or adjacent Lakeside residents u can take 143
for Teban users or 30 for Lakeside users. 30 passes by Shenton Way
and Suntec whilst 143 passes the other side of Orchard.
502 very long though. i got take before the 174 also. so mrt is
still the best. because more predictable i think.