Is the extra £350 worth it between Samsung models

[Geffg]

Been looking at a new tv. Both Samsung’s, one 49” qled for £999 80 series and a 50” qled for £650 60 series. Originally gonna go for the cheaper one but now thinking about spending the extra. Was told by the shop big difference in picture etc but in reality is it worth the big price difference. Will I really notice much difference in real life.
Even the cheaper one should be a step up as tv got now is about 6yrs old just a normal led one.
Nothing wrong with it just fancy a new one!