I think you should take a look at the S1 series. Unless you desperately need THX mode (which by all accounts is too dim), Vierra cast, or a host of other (IMO) superfluous features, the S1 series has the same panel as the V and G series at a lower price. For $1800, you could nab a solid 58" of S1 rather than 54" of G10. That's a 15% increase in viewing area!
Ultimately it comes down to your priorities, but for me the screen size was more important than the "step-up" features offered in the G10 series.
... it didn't hurt that I nabbed the S1 for $1500 on Black Friday, either.