1080p Plasma to 4K Dolby Vision.. Suggestions

[twobelowpar]

I currently have a 60" Samsung F5300 which I absolutely love as long as the lights are off in the room. The PQ in a dark room is outstanding and other than glare, I have no complaints whether watching a Bluray, satellite, streaming, gaming, etc.
But I am starting to get the itch for a 4K set (with Dolby Vision). The only 4K content I'll have will be whatever iTunes movies get the upgrade. I expect it will be a decent amount. Other than that I have no discs yet other than GotG2 and my Netflix plan isn't the 4K one either. What I'm wondering is, is it worth ditching my 3 year old Plasma when I would have so little content at the moment. I can't afford an OLED so I'd be looking for a mid-upper scale LED unless I could end up getting an OLED for under $2000 next year.