Monitor, may be Samsung

The times when good monitors were an impermissible luxury long ago. Having carried out preliminary reconnaissance, I came to the conclusion that we lived to see that 24 displays do not buy anymore, and the bet should be made for 27 diagonals or even more. Next, I collected recommendations from friends about the brand of the monitor, and knowledgeable programmers about the technical characteristics. Everything converged on Samsung.
I do not know whether to take a monitor from the best 29 monitors (as it says here).
Now I think what kind of monitor it is worth to buy.
Do I need speakers in the monitor? Or is it worth taking the sound separately?
I will be happy with the advice of friends!