4K is still quite a ways off from being mainstream, if it ever gets there. First off there is really no 4K content available, considering all current media only goes up to 1080. And unless the screen is 60 inches or larger I don't think you'll notice a difference between 4k and 1080, its more intended for massive screens.
So unless you have an enormous disposable income, there are better things to spend money on (sound system, cough)
Yea thats exactly what i was thinking, but dont you reckon a 4k resolution would do better at giving better 3D quality? Most of the 4k Tvs' upscale the content to 4k, ontop of that content such as PC games can be played at this resolution, next gen consoles might as well. Anyways thats just me thinking pro's and con's. But yea i reckon its going to be a while till 4k is mainstream, i never heard of it till yesterday.
Haha as for the sound system, i already invested in one =p I just thought it was time for a TV upgrade since the last time we purchased one was back in 2007 when 1080p was still new.