MRT to Eunos and then change 15 or 15B is faster than 5
especially peak.
MRT from Tiong Bahru to Eunos takes only 20 minutes. From there you
change to 15 or 15B to Kaki Bukit takes around 10 mins at most.
Walk from Eunos MRT to 15/15B bus stop takes only 2 - 3
minutes.
In other words, saves u about half the time needed. 15(Inclusive of
shortworking trip 15B)'s frequency is much better than sv5's
although u have to stand most of the times.
When u going home there wont be any shortworking trip and u have to
cross the road (Most people "jaywalk"across the road because there
is no traffic light for human to cross unless u walk a small
distance up) at jln eunos to go to MRT. So if u dun mind longer
trip home(Incl jam at PIE) u may try sv5