My personal opinion having owned pretty much all of them, is the Sony KDS-55A3000. 1080P/24 capability, 120HZ and one of the best pictures per dollar out there. You can get them pretty cheap from Sears now, for around $1500/1600.
Maybe not 20 times But agreed. However, I like the insurance of dealing with someone local for stuff like that.
Edit: Best Buy has the best prices when the t.v. are on sale (shop the sales).
Best Buy still doesn't have the best prices when the TV's are on sale.
I've been through around 20 TV's in the last couple of years or so and 75%+ of the time, locally Fry's will have the best deal with their sales. Sears has pretty good deals as of late. Conn's, it just depends on how desperate they are. Best Buy is rarely ever the cheapest, I've only bought one TV from them and it was more so just a technicality of them having the TV in before anyone else and I really wanted that specific model, which no one else anywhere in DFW had yet. They actually didn't even have it out yet, it was in their warehouse. Costco is a decent alternative as well, with their included warranties, however the models are usually made specifically for Costco and don't include some of the bells and whistles the other models will.
As far as online prices; they are generally better, yet you have to deal with a lot more and don't get the comfort you get when buying local and all that entails if there happens to be a problem. I've bought 2 TV's online, both from Amazon and they were good. However, if you work hard, you can generally get pretty much the same deal local, you just have to really watch the ad's/in-store specials.