Speaking of game performance and the TX-L37DT30B positively excelled in this area. Bringing up my trusty Everybody's Golf power bar to get an initial feel for input lag revealed the DT30B to be a very responsive display indeed - I literally could not detect even the merest hint of latency between controller input to on-screen response and it felt very satisfying.
The DT30B was so reponsive, in fact, it's causing me to revisit my input lag testing methodologies. What I can tell you is that the lag is under one frame at 60fps, i.e. less than 16ms and probably closer to 10ms. I will update this review with an actual averaged figure but the reality is, all but the absolute hardcore tournament gamer will be very well catered for in the DT30B and it comes very highly recommended in this area.