Im booked in a class "V" economy seat for a L-O-N-G trip next month (ORD - SIN and PEK-IAD). The nice agent on the phone told me my ticket is non-upgradeable because of the booking class (V). Are there any tips for getting this ticket upgraded using my miles or am I S.O.L unless I find an SWU?

Regarding SWUs - has anyone had experience (good/bad) purchasing SWUs on eBay or other online forums?

thanks...