£499 each one-way seems steep to me.
I would personally just stay in WT+ where you will get 8646 Avios / Miles return per person, put them into a Household Account and with another couple of thousand or so, you could use them next time for a cheaper one-way WT+ to CW upgrade (10k Avios each one-way)
(I assume there's no option to upgrade with miles at this stage? Would have been far cheaper buying 20k Avios for around £300 and upgrading both of you one-way at the time of booking depending on how much you want the extra TPs when comparing to a cash upgrade)
Keep the nearly £1k and spend it elsewhere - would even cover a couple of WT flights from LHR-JFK in the future.
As for comments about it being better upgrading on the return leg, personally I don't sleep on planes heading east and £499 for 3-4 hours sleep isn't worth it to me. That's 3-4 nights in a hotel where I can sleep properly for 8 hours+ should I choose!
There's always the slim chance of getting upgraded at the gate anyway.
Last edited by xenole; Mar 28, 2012 at 4:33 am