a bit tongue in cheek.. (as what i seen from SSDC and individual
views)
The reasons are
simple.
Our lessons are structured and modular. That means you will only
proceed to the next stage of your learning only when you have
mastered your current stage. That way, you know you are always on
the right track.
Yeah. and if you dont master your current stage, you get the
priviledge of staying longer, try to beat the long-service student
record, and pay more fees to us! 
We show you all the costs
upfront. There are no hidden costs with us. Yes, we cost a bit
more, but that is because we also put in a little more. What this
means to you is you will know exactly where your money
went.
We cost more because we look poorer and run-down than our rivals,
espcially SSDC. We need the cash because we need to bid for a new
plot of land fast, after SSDC won thw Woodlands tender! We also put
in a little effort to make you stay longer and book more lessons!

Our roads are congested.
But why fear high traffic areas when all it does is to prepare you
for the crowded roads of Singapore? Do you want to get your licence
and not dare to drive, or do you want to be tested to your limits
and drive with confidence?
The congested roads are congested true, give you more real hands-on
experience, but do fear, because one mistake on the rough roads,
with 10-footer Nissan Cabstars and taxis in hot pursuit, and the
tester will be smiling at you 1 month later. What matters most is
get your licence fast and minimise cost, then decide later. after
all, to everyone, its money matters. Test me to my limits when i
got my licence, not before!
still, i chose SSDC because its nearer to my house, and that the
area has less vehicles, compared to CDC. BBDC, well.. too many
people walking and jaywalking