Are there any alternatives?

Absolutely. If you don’t care for the elaborate stand or materials quality, LG has a 27-inch 4K IPS monitor with similar specs for significantly less. LG also has the 27BL85U, which comes similarly specced with an equally impressive stand at roughly the same price, and this one does include USB-C. Alternatively, if you’re looking for something with this format and resolution, but with a wider color gamut for photo work, the Dell U2720Q might be better for you, albeit at a higher price.

　　

How long will it last?

The Dell S2721QS should last at least five years, three years of which Dell will cover with an advance-exchange warranty, meaning that in case of disaster, the company will ship you a new (refurb) monitor first and then let you return the old one after you’re set up.

　　

Should I buy it?

Yes. If you want a simple, no-frills 4K display, you can’t go wrong with the Dell S2721QS.