Does anyone have any thoughts on these two airlines?

We were all set to book with Emirates (Manchester to Auckland) 34in pitch, 50kg allowance (with ANZ affiliation deal) and loads of Disney films on the ICE entertainment system. (4 children and 3 teens to occupy)

Then someone mentioned Air Singapore. (Heathrow to Auckland) 32in pitch, poss 40kg allowance, not sure about the entertainment (are there enough children's films to keep them occupied!). But £600 cheaper overall and gives us Diamond Club points (we already are members and these flights would earn enough points for one return flight)

I'm not sure which to choose now. Any thoughts?

G