They have changed. I just don't think of them as a "Premium" brand. I think what separates Samsung, Sony, and Panasonic are their consistent pioneering in the industry, their quality and their ability to resolve issues in a timely manner with a high level of customer satisfaction.
I think it is funny how my comments are being compared to the kind of crap people used to say about Japanese products back in the day. It wasn't like I was touting RCA, Zenith or some other american company. They didn't even make the list of top recommendations. Nationality didn't even enter my mind.
Additionally, I don't think 7 years means a lot for a brand that has been around since 1947. I choose to look at specs, performance and customer support as more important than marketing. Companies like NEC, Panasonic, Sony and Samsung have flown technicians out to our facilities to conduct repairs and conduct training on how to repair issues. I haven't had that same level of service with LG.
On another note, I think Sharp should get some consideration as well. Some of their models perform well.
Regardless, we're all just posters on a vespa forum and if you want better advice on TV recommendations your best course would be to ask on a forum dedicated to home theater. Additionally, I'd find review sites rather than rely on amazon, best buy or wal mart reviews. Here are links to a few:
http://www.avsforum.com/
http://www.hometheaterforum.com/
And here is a decent review site from an industry mag:
http://www.soundandvision.com/
another one:
http://hometheaterreview.com/
and as previously mentioned:
http://www.cnet.com/
And now for a disclaimer...
At the end of the day these are just my opinions, formed from my experience and what I could reason out with the information around me through 18 years in the industry (I don't consider this a whole lot of time either for the record, as I work with plenty of people with 30+ years in the industry). Some of those opinions could have well been formed in err and without due consideration. If you have an LG and love it, I'm happy for you. I am watching the news on an LG in our bedroom as I am writing this. I found it on clearance at Fry's and it works great in the bedroom but I have, at the time purchase a top of the line, Samsung in my living room where I watch movies for entertainment with an Harman Kardon Receiver and Polk floor speakers with dual subs.
Essentially, it is important for you to do your own research and the best way to do that is to immerse yourself around people who know about these things. A grape ripens on the vine or so they say... Similar to why/how I joined this community to learn more about the wonderful world of scoot'n.