I currently have 4 day old Samsung SP50L7HX which I'm hoping to return to where I got it from (avwow.com). I'm not happy with black levels (in dark scenes) produced by this model. I've tried various settings (including using a THX optimizer), and I've also tried what I believe is the ultimate black test - I reduced the brightness to 0. Even then, the blacks remained a darkish grey colour. I know other forum members who own this same model are generally happy with the black levels, which makes me think that perhaps their is a fault with my set. I can't find any other way to explain the fact that the black levels on my 5 year old Toshiba 4:3 rear-projection TV blow the pants off the Samsung. Anyway, if avwow.com allow the exchange/refund, I don't know what other model to go for. I'm considering the Toshiba 52WM48 and the Sagem Axium HD-D56B. I'd be interested to know anybody's thoughts about these models, especially in regards to the black levels during dark scenes.