Pros + Unrivaled picture quality
+ Extremely accurate colors/color temperature in the THX mode/EBU modes right out of the box
+ Beats The Pioneer Kuros black level and gray scale reproduction
+ Low screen glare/reflectivity compared to all other plasmas
Cons - Expensive
- No S-video input to make the most of S-VHS sources; composite video input rolls off high-end and makes SD sources appear duller than they are
Summary My primary concern with a TV is first and foremost picture quality (PQ). For my intended use, apps, peripherals, features, etc. are all secondary to PQ. The ZT60 has the best PQ of any TV I've ever seen. All the key features of PQ--color accuracy, saturation, contrast, shadow detail--are fantastic and the blacks...well, all I can say is if I were asked how much blacker the TV could get I'd have to say, "None more black." :) Unlike many (most?) TVs, the ZT has two picture modes (THX Cinema and THX Bright Room) that look great right out of the box.
In my house 3D won't see much use but I did watch a movie with the supplied glasses and, again, no complaints. Most of the apps are gimmicky. I have no interest in watching YouTube on my computer. The ZT includes the usual suite of streaming options (i.e. Netflix)but due to the interface (keyboard not included) navigation isn't very efficient. Additionally, since Audio Return Channel (ARC) is so buggy, if you have a surround sound system, as you should with virtually all TVs these days given their weak speakers, all of the streaming apps are better accessed via an external Blu-ray player.
How does the ZT fare versus the competition? It compares well to the less expensive VT60 if 100% of your TV watching is in a very dark room but the filter on the ZT does a better job blocking ambient light. The VT does have beefier speakers and a pop up camera for Skype, two features which don't benefit me personally.
Shortcomings and limitations: ARC is finnicky. Sometimes it works and sometimes it doesn't. In online a/v forums some have complained of excessive noise from the cooling fans. Mine compare to the noise level you get out of a PS3 (slim) or a desktop PC. (As of early August Panasonic has a fix in the works.) As with all plasmas, the screen is glass so if you're in a very bright room or if there are windows opposite your TV you may want a TV with a matte screen. Burn in really isn't a concern for plasmas anymore but some do still have image retention (IR), which is the short-term retention of a given image, usually a static TV channel logo or the ticker that runs along the bottom of ESPN. I have 200+ hours on this unit, in which I've watched letterbox, pillarbox, ESPN, static logos & gaming and have yet to see IR of any kind.
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Thank for reading, I hope it helps.