Folks, considering buying 57"WV600 (Sony). It says no support for Native 720p (it converts to 1080i). Whereas for 510 series it says format includes 1080i, 720p, 480p and 480i. Pros and Cons as what I have seen so far.... Pros for 600 series: People have rated it very good and some have even said better picture quality than the 510 or 550 too. Cons for 600 series: No Native 720p support. Plus Sony has discontinued this series now - though they suport the warranty. (Should this be a concern? Why would they discontinue it?). Pros for 510 series: Excellent rating and good picture quality etc... Cons for 510 series: Some of their early models have/had flicker issue after a year or so. Is this an issue even in the newer model? Help Much appreciated!