MEL/SYD - LHR (business return) in March - should I cash-in Altitude points for Velocity points or Krisflyer points to pay for it?

MEL/SYD - LHR (business return) in March - should I cash-in Altitude points for Velocity points or Krisflyer points to pay for it?

Definitely Krisflyer!

The transfer rate from Altitude to Krisflyer and Velocity are both 2:1

Costs for one-way Melbourne to London:

   Velocity Business Reward: 175,000 points + ~$80 taxes

   Krisflyer: 80,750 points  (online 15% discount) + ~$490 taxes

Even though Krisflyer charges additional $400 on taxes, you save a whopping 94,000 points each way. 

2 schools of thought on that one, I'd take the points hit any day over $

Although the cost one way from mel to lhr on eithad is only 125k va + taxes, so also depends if you favour ey or sq

Thanks for that.

Looking at the flights now, Singapore are 'Waitlist' - have any of you had experience with selecting one of these flights and actually flying, or is it really pot luck? E.g. if I book one 'waitlist' on Singapore and one 'confirmed' on Virgin for the return, am I at risk?!