Quiero recordar algo que no sé si puse en en este hilo o en algún otro:

Confirmed: the only picture quality difference between the ST30 series ($1,499 @ 50 inches) and GT30 series ($1,899 @ 50 inches) is the presence of THX. Both have the Pro settings menu with tweaks like four-point color temperature and gamma, they use identical panels and electronics, and both will do 3D. The GT30 does have smarter styling, with a thinner bezel and significantly thinner panel, while the ST30 looks a lot like the 2010 plasmas. The GT30 also gets a VGA-style PC input and an extra HDMI port.
Most of the picture quality improvements on the ST/GT models are focused on 3D, but their 2D pictures should be very good too. In a side-by-side 2D comparison between a VT25 and an ST30 showing a star field and an Atari-era spaceship, I couldn't see much, if any, difference between their black levels. The usual caveats (manufacturer-controlled demo, bright room, and so on) apply, but suffice it to say that I expect very good things out of the ST30 series. Most of the 3D improvements had to do with crosstalk reduction (see the slideshow for more), so I'll be sure to compare the 2011 models' 3D with the 2010 VT25 to see how effective those changes are.
The anti-reflective screen, or "louver filter," looked very similar to last year's model. Panasonic touts a significantly better AR screen compared with 2010, but in that side-by-side I had a tough time telling the difference. Maybe I'll have better luck in the review.
The GT30 and ST30 will have a "24p smoothing" feature for 3D, but that's not the same as 1080p/24 in 2D, which is still restricted to the VT30. Confused yet? Panasonic is using the term "24p" in marketing a new 3D-only feature that uses frame interpolation--the same technology used in 2D dejudder processing by 240Hz and 120Hz LCDs--to add smoothing to 3D material. A rep was quick to point out that the feature can be turned off. On the 2D side, Panasonic confirmed that its 1080p/24-friendly "96Hz" mode for 2D will again be restricted to the flagship model. And for what it's worth, all 3D-compatible TVs will also get 2D-to-3D conversion.