One final massive strength of the P54Z1 that suddenly explodes into your consciousness with Blu-ray playback is its black level response. For while I'd felt strangely unmoved by this aspect of the TV's pictures with standard def, with a good Blu-ray film I'm suddenly seeing black levels deeper and more tonally neutral than anything Panasonic has managed before (except for the P46Z1!).

By tonally neutral, by the way, I mean black colours are hardly infused at all with the slightly green flavour noted with some screens lower down Panasonic's plasma hierarchy.
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To sum all this high definition glory up, I'd say that the P54Z1 produces the most cinematic pictures we've seen since Pioneer's KURO TVs - and you can't say fairer than that. Especially when you consider that the quality we're describing is coming via a wireless AV delivery system.

The fairly hefty 'bolt-on' speakers Panasonic does with the P54Z1, meanwhile, work hard to ensure that the blissful Blu-ray film experience is joined by some tip-top audio. The audio from a good film mix fills even a large room, without sounding harsh, imprecise or muddy, while dialogue sounds clean and real. There's even a reasonable amount of bass to be heard, and that's certainly not something you get with your average super-slim TV./994318|fde9_11741-panasonictxp54z1img9.jpg

Verdict

Another day, another TV that's got me feeling conflicted.

Having finished my testing with a few Blu-ray discs, I'm still basking in the warm glow of the P54Z1's truly exceptional HD movie performance. And yes, I've been at least a bit seduced by the extraordinarily skinny design and extremely effective WirelessHD technology.

But forcing myself into a more sober reflection on my experience with the P54Z1 as a whole recalls those sometimes underwhelming standard definition images - which look slightly worse than they did on the P46Z1 because of the P54Z1's extra screen size. And then there's that £4,500 price tag to consider. This is a price so high, of course, that it actually makes the now £2,500-odd asking price of Pioneer's 50in KRP-500A look cheap. And while the Panasonic arguably matches that legendary Pioneer with Blu-ray playback, the Pioneer is for me a more consistent picture all-rounder.

So unless you're desperate for the Panasonic's extra 4in of pictures, slim/metallic design or wireless technology, the Pioneer is arguably the more sensible buy. If you can get hold of one before they disappear forever, of course…