Motion could be better handled when it comes to judder, but LCD's more aggravating flaw of motion blur is well suppressed by the 200Hz engine.
The set isn't a bad standard definition performer either, upscaling DVDs and even much noisier standard definition Freeview channels to its full HD resolution so that they look neither as soft or as messy as we might have expected.
While the 47LX6900 can occasionally produce a truly outstanding 2D picture when all the right picture source planets happen to come into alignment, it also suffers a flaw or two.
By far the worst of these concerns the screen's black level response. Initially it looks OK, especially with the local dimming tool active. But once you've turned this feature off for the reasons given earlier, dark scenes appear behind a veil of tell-tale grey 'mist' that considerably reduces the image's dynamism, hides shadow detail, and generally makes dark scenes less pleasurable to watch than bright ones.
Compounding this thorny problem is the appearance of a little backlight inconsistency, whereby the corners of very dark pictures look noticeably brighter than the rest of the picture, and the common direct LED problem whereby black level response reduces dramatically if you have to watch from any significant angle down the TV's sides.
Another less troubling problem is that colours sometimes look a bit plasticky in places, on account, we presume, of the screen not having quite enough colour processing power to resolve subtle colour blends with total precision.
Finally in the negative column, while the TruMotion circuitry does a good job of suppressing motion blur, it can throw up more processing side effects than we'd ideally like. Keeping the TruMotion system to its lowest power setting still delivers a decent balance between motion improvement and the processing noise, but the system is certainly not up there with what the likes of Sony, Panasonic and Philips are achieving with motion processing these days.
The 47LX6900's sound is slightly better than we might have expected given the TV's extreme slenderness. As usual, there's a definite shortage of bass, which leaves action scenes sounding unconvincing and lopsided. But the mid-range is at least dynamic and open enough to keep raucous scenes sounding detailed and clear, and pretty loud volumes can be achieved before real distortion sets in. Though if you do push the TV loud while watching an action film, be prepared for the odd moment of wince-inducing harshness along the way.
The 47LX6990 has the price, looks and features of a real star turn. And every now and then it gets close to delivering on that potential with its performance, too. But unfortunately, a malnourished black level response and some marked crosstalk noise with 3D viewing conspire to leave it looking overall more average than we'd hoped.