New monitor

[skaertus]

I currently use a 27-inch LG 27ea83 as an external monitor. It is an IPS display with a 2560x1440 resolution which I bought back in 2014. It is basically this one here: http://www.lg.com/hk_en/monitor/lg-27EA83.

Now I am thinking of upgrading my monitor to a retina resolution. I intend to use the new monitor with a 13-inch MacBook Pro with Touch Bar (late 2016 model) and a Dell XPS 15 9550.

The tricky point is that, here in Brazil, where I live, high-resolution monitors are very rare; it is hard to find anything with a resolution superior to 1920x1080. I can only find these at Dell's website.

I am thinking of the two following options:

• Dell P2715Q
• Dell U2718Q

They are both nearly the same price, and the configurations are very similar. They are both 27", IPS, with a 3840x2160 resolution, and brightness of 350 cd/m2. The U2718Q seems to have a little bit better contrast. However, I could not find any comparison between these two models, and, as I have to order it online, I cannot just look at them both to check them out.

There is also the S2817Q model, slightly cheaper, but it has a TN panel, so I think it should be inferior. There are superior models, of course, but much more expensive, such as the UP3218K, which is a 31.5" with a 7680x4320 resolution, but it costs 6x as much.

Are these two monitors (P2715Q and U2718Q) better than the current one that I have? Which of them is the better one? Is it worth the upgrade?

Thanks.