Should we fly fsc economy or lcc biz class?

Surprisingly the cost of both flight is about the same. I would prefer to try biz class lcc due to the bigger leg room. Sydney by biz scoot can go around SGD 800 all in return with food and baggage.

Flying economy from sin by LCC to Australia is normally more expensive than taking aax. But flying biz using LCC from sin is cheaper than aax even if comparing sin- Syd vs kul - Syd under biz class basis

Generally lcc is only suitable up to 5 hr flight. LCC biz is good for above 5 hr flight. Just realized beside scoot, malindo and jetstar also provide biz class.

2 A 1I
Infant flat fee at SGD 150 return
Syd 1560 vs 888
Perth 1298 vs 698
Mel 1529 vs 857