$40,000 TV, $40 speakers. Why do they even bother? You get these poofy little things that can barely get out of their own way, and at best emit the flaccid yelp of a low-rent iPod dock - is anyone going to use them with this thing? If they are, they shouldn't. It's like driving a Ferrari with a set of 14" economy tires.
Hopefully you can at least take the damn things off.
I can testify, by the way, to the significant gains possible via 2x upscaling. I spent quite a while working out a setup for upscaling DVDs to 1440x960p (for a CRT projector, which could display that odd resolution 'natively' - which in this context means 'without artifacts').
If you use regular sharpening, you end up with terrible halos and other nasty side effects, particularly when the source material has already been sharpened within an inch of its life. But if you use a high quality upscaler like LimitedSharpen, you can get really remarkable results. Nothing like as good as 1080p, but enough that output was tolerable on my 84" projection screen, as seen from about 1.4x screen width.
Also, from my experience - to my significant surprise - Sony's upscaling algorithms are quite good. I've played around with them quite a bit on a few of their higher-end 1080p TVs, and both the upsampling and (!) 'MotionFlow' temporal frame interpolators work quite well. I can't speak to the quality of other manufacturers' newer algorithms - and even Sony's didn't match the quality of LimitedSharpen with straight pixel doubling rather than the odd ratio you end up with going from, say, 720p to 1080p. But based on other experiences with upscaling I had expected some tossed-together implementation of your basic halo-addled sharpener, so I was pleasantly surprised.
I'd be interested to see the math behind their 2x upsampling, and in particular I'm curious about the hardware they're using to accomplish it. LimitedSharpen couldn't handle 48fps upscaling to 1440x960 using all four cores of a (now outdated) core2quad Q6600, so I had to make due with bilinear interpolation on one axis. Upsampling of a 1080p image presumably requires quite a bit of math grunt, even now.