Sony's new SXRD line (I believe it was the 50" I saw) is quite nice, but I wasn't so impressed that I would throw away the advantages of plasma to get it. That's just my personal opinion. I'm still considering the Panasonic HD plasmas in light of having seen the SXRD. I can't give you a fair comparison between the two since I wasn't able to compare them even in the same room, let alone side by side.
Now, Sony's new S-LCD....holy cow, that was truly a gorgeous picture...at least, with the content they were showing on it (which was the same as being shown on the SXRD). Too bad it's only available up to 40" (and surprisingly MSRP will be only $3499 I'm told for that 40" XBR model). When we get that set in the store I will be taking a closer look at it and if it performs that well with other content I will likely consider that for my bedroom.