Price?, durability? reliability?
There are a few guns that have stood the test of time, use in duty and abuse. Some have withstood torture tests that no civilian would inflict on a personally owned gun. Three makers; Beretta, H&K, and Sig have proven their guns are made extremely well. Most of the people rating these are doing so by price. I don't think that was the question.
The 1911 has taken many hits, probably because there are so many of them, made by almost every gunmaker in the world. But the 1911 is a proven design.
The Glock may be next in hits, but Glocks have always been a love it or hate it design. But they are time tested and proven.
To me the most overrated gun is the Bersa .380. Constantly compared to others as a "great buy". That may be, but it is not a great, or even average gun in my opinion. Price removed as a consideration, how many people would choose a Bersa over a Sig 230, or a PPK, or a HK K3, a Beretta 84? Price consideration removed do you pick a Lexus or a Yugo? I'll take the Lexus...thank you.