Originally Posted by PlasmaPZ80U
I'm probably going to exchange my UN46EH5000 for the LN46D630. It's not that the EH5000 isn't a great TV, but based on what I read on the net and seen in person the 2011 Samsung LED/LCDs have blacks that are about twice as dark as this years models, which means twice the native contrast ratio. I've also read about the D630's great colors, which is something the D550 I had for a while last year never had (despite awesome blacks and contrast). Best Buy says they have deleted this set from the system (though it still shows up on the website and two locations in my area have them in stock). If I can get the SQ01 panel (Samsung S-PVA) and not the SN02 (CMO S-MVA), I will certainly pick one up soon.
The LN46D630 should be good too. Everything I've read has said the 2012 LEDs were slightly deeper than 2011 LCD/LEDS. I don't remember reading that LN46D630 had any deeper blacks, and certainly not twice as deep. The UN40EH5000 measured .05 cd/m2 at televisioninfo, and twice as deep would make the LN46D630 as deep as Panasonic's flagships Plasmas.
I've read the LNxxD630 and UNxxEHx000 have similiar native contrast ratio, and that the LNxxD630 has brighter whites and slightly lighter blacks while the xxEH had dimmer whites and slightly deeper blacks. I think its CCFLs do give more light output then the limited array LEDS though, which will help the native contrast by bumping up the whites, but lighten the blacks too. The UN40EH5000 measured 5456:1 native contrast and twice that would put the LN46D630 at over 10000:1 which isn't something any LCDs have pulled of yet (at least in panel techs already available).
Regardless, the only real con I've read on the LN46D630 is that it doesn't have great shadow detail. That might be a OK trade off though if you watch lighter material and want the better uniformity and equivalent contrast.