Damn good deal. Where at? I bought Samsung 55NU7400 at just above RM3k. Yours seems like a steal.

Samsung's web browser for my NU7400 is quite smooth and intuitive. No complains at all.

Yes, can install apps. It's under the same series, UHD, so should be same interface. Only between different series (example: UHD vs Premium UHD vs QLED), then the interface is different.

Would rather go for a Samsung UA55RU7100KXXM if your priority is the color re-productivity. Not too expensive also, can get for RM2,500+-

Not too sure about the last shorter part, have no experience on that, but I do know that more often than not, they do have shorter warranty periods. Could indirectly indicate that indeed it has a shorter lifespan/more issues per batch.

I wasn't saying that Samsung has shorter lifespan. At least not to my own experience. Personally, it has been great for me. I'm a huge Samsung fan and most of their products have lasted reasonably long for me. From TVs, monitors and smartphones to washing machines, microwave ovens, aircons and refridgerators, overall experience as a user is definitely positive. I used to have a UA46ES6200 which was great and lasted for years (so sad that they don't do 3D TVs anymore)! Still going on strong now but have shifted it to one of my rented house and gotten myself a UA65RU7400 recently.

Only complain is that I also bought an entry level Samsung fridge and it decided to breakdown just after a year I bought it. It was like only 2 weeks out of the warranty period. Had to pay RM400+- just to get the motherboard replaced, which was like almost 40% of the price of the fridge.

The part on the picture quality of a Samsung TV being better than competitors is definitely true. Just have to walk into a store and do a A-B test with other brands on the similar range and one would agree. Design and user interface/intuitiveness, not much of a difference and hard to tell. All in all, its certainly a solid brand to aspire to own.