I flew to Singapore on Scoot. It was great, the price adds up when you book your own seats, extra baggage and meals etc but it was still a great price. Food was yum (one was chicken briyani) and well set out.
On the same trip we flew Tiger from Singapore to Phuket.
Scoot was so much better, a lot more leg room. I would take pillows etc as you need to buy them but a blow up pillow doesn't take any room in your hand luggage. The inflight media wasn't working - I think you either book an ipad or take your own but being on a flight with my bestie with NO children and husbands I wasn't interested in watching a screen
The Tiger flight was squashed in but being an overnight flight on a short trip we just sat upright for the whole flight.
Oh on both carriers our baggage was quite overweight (due to shopping) and they didn't charge any extra!
The business seats don't look any different to economy to be honest,
I told DH I'd fly Scoot again but I wouldn't fly Tiger on any flight over an hour.
Ask me any questions if you want.