Same quandary here -- I have Vann's agreeing to pricematch US-Appliance's great PN59D6500 bundle, but obviously there is a time limit to how long that pricematch will last. The Auto-Contrast thing is starting to make me antsy.
I am pretty much choosing between the 55ST30 and 59D6500. I really like the D6500's thin matte bezel, colours, and adjustability... but the ST30 always seems to look very crisp/contrast-y with deep blacks. A few weeks ago that 55ST30 somehow plummeted to 1,170 on Amazon -- and I'm rather regretting not pulling the trigger on that, since that was a solid 500 cheaper than the 59D6500 bundle. But of course now the 55ST30 is couple hundred bucks more and has been for 2 wks now.
There's something to be said for those extra 4", though. Not that BestBuy is the best place to view things from a critical eye perspective, but they happened to have the 59" directly below a 55"... and the increase in size is pretty stunning. Which makes sense, since the bigger the TV, the more actual pixels are involved in a 4" increase.
Really should just pull the trigger on the 59D6500 bundle (2 glasses, BD player, that 5-film Shrek thing) for 1,6xx. Probably not going to get a whole lot better of a deal than that, and I'm likely fooling myself if I'm somehow figuring that the ST30 is magically *tons* better than the D6500. By all accounts, they seem to be comparable sets, each with their own plusses and minuses, and each with their own supporters and detractors. If one was truly better than the other to any considerable degree, I think that would've shaken out in these forums in pretty short order...