Generally you get what you pay for (I believe this is true more than it is not, although there can be a lot of exceptions), but there can still be a sweet spot as far as value is concerned, where you stop getting significant improvements after a certain price point. Where things maybe become gimmicky. Where would you say that "sweet spot" of value is for TVs?

We're not just talking about picture quality, but also things like build quality (reliability) and duration (life expectancy). In theory, a $1500 TV that lasts 10 years is more valuable than a $1000 TV that lasts 5 years, if the other aspects are similar. Cheaper TVs tend to show signs of aging sooner, tend to have worse picture quality, etc., but at what point are you throwing money away? Not a poll because it may not be a single dollar amount across all brands (and on that note, if you have specific brands/models/series that are particularly of good value or of good report or praiseworthy, please mention it because I seek after these things).