Just booked a trip for work from LHR-LAX and the SFO-LHR in April - got both in N for a pretty good price. I just called VS to sort out some extra leg room on the return leg and was told I could upgrade for 12k miles and only £45 - cheaper than I'd imagined to move up to qualifying fare and a lot better than £80 for an exit row!
Great CS as well from VS.
Great CS as well from VS.