The Panasonic TC-L58E60 is an upgrade from my old JVC I'Art AV-32F476 tube TV and is the first LED HDTV I've owned.
I paid 999.99 at Amazon. My final price was 899.99 when Amazon honored a price match with Best Buy. Amazon delivered the TV by CEVA which went very well. They unpacked the set, attached the base, set the TV on the stand, attached the AC power cord and made sure it powered up OK before they left. It was a good delivery experience.
The Panasonic TC-L58E60 beats my old TV in every category except one: sound. The JVC had nice stereo sound that would carry across the room just fine and was not unpleasant to listen to. The sound on the Panasonic TC-L58E60 doesn't carry like my old TV and has zero low end. Tweaking the sound settings on the TC-L58E60 (it does have an equalizer and several sound mode settings) didn't help and only made it boomy or tinny at best. I run this TV via HDMI through my AV receiver (Sony STR-DN840) full time to avoid using the TV speakers. So the TV speakers will work in a pinch but I would advise anyone considering this set to plan on using an AV receiver and speakers or at least a soundbar.
As far as picture quality goes I'm impressed. I used the settings for this TV from the CNET review. I have the Disney WOW disc and I've looked at all the test pattern screens and the display seems to be performing well in those tests. The blacks are good and I haven't noticed any kind of clouds or other light distortion. There is a slight "dirty screen effect" in the form of narrow vertical bars of slightly darker shade similar to images of other televisions posted in the forums here. This DSE is most prominent on light or solid color screens or bright clouds/sky where the camera is panning across. Most of the time I don't see the problem and I'm fine with it. I really like this TV's picture.
This TV has a game mode setting which I've tried with the PS4. Turning the game mode on only results in a slight increase in sharpness of some details. It's difficult for me to tell the difference between game mode off or on so I'm leaving it on for what it's worth. I haven't noticed any problems with lag or any sync problems with between sounds and onscreen action.
The television tuner on the Panasonic TC-L58E60 with my DB8 antenna in the attic seems to work great. I get strong signals and a fine HDTV picture. I actually prefer the antenna feed picture over the cable box feed for the local HDTV channels. The antenna feed seems to be slightly more clear.
About the Internet Apps on this TV, I haven't used them. I've been using the apps on the Sony BDP-S3100 Blu-ray player without difficulty.
Overall this TV is working great for me and I'm glad I finally upgraded. 4.5 stars. I'm taking off only half of one star due to the less than optimal sound.