If you have a look at the av forum main page listing all the various forums, under this forum there's a link to recent reviews and one of them is the 42" version of the set you're interested in. I think they said that basically it's overpriced as you're paying for what is a beautiful looking set but one that is not so good picture wise as those a lot cheaper. I think they also said that it's great if you have a superb signal but anything less and it shows the flaws.
Also, you may wish to wait if you like sony sets as there's a whole new range coming out this month and next including the latest version of the MR1. Sizes include a 60+ inch version at a ridiculous price. They're also doing a 42" LCD version in case that's of any interest.
I'm waiting for reviews on them to see if they're better thought of than the existing range. Hope this helps.