We install both, so we have no reason to push one. The useful way to choose is not by looks, it is by how each surface behaves when something goes wrong.
Poured concrete is a single monolithic slab. It is fast to install, it is the cheaper option up front for a large flat area, and it is hard to beat for a plain driveway. Its weakness is that concrete cracks. A good contractor manages this with proper base prep, rebar or mesh, correct pour depth for the load, and control joints cut on the right spacing so the cracking happens in a straight line where you will not notice it. What you cannot do is repair a crack invisibly. Patched concrete always looks patched.
Pavers are individual units set on a compacted base and bedding layer, held in place by edge restraints and joint sand. They cost more to install because there is more labor in the base and the setting. In return they flex slightly with ground movement instead of cracking, and when something does go wrong you lift the affected pavers, fix the base underneath, and set them back down. Nobody can tell afterward. If a utility ever has to be trenched under your patio, that difference matters a great deal.
For appearance, pavers offer more pattern and color, and they look better on a patio where people sit. Stamped concrete closes part of that gap for less money, though the stamped pattern will eventually show the same cracking issues as any slab.
Whichever you pick, the base decides the outcome. Excavate to depth, compact aggregate in lifts rather than dumping it in one pass, and pitch the whole thing so water runs away from the house before you think about pattern. A beautifully laid patio that drains toward the foundation is a much worse outcome than a plain one that drains correctly.