I think you'll find most folks in this 4th-gen specific section obviously biased to the 4th gen look.
Stock vs stock I also lean to the more bubbly look of the 4th gen. I also have to agree that the 3rd gen has a slight visual edge for me over both the 4th and 5th gen though.. but that's because I'm a big fan of the older LC platform which is more boxy, and more proportionate looking when you lift and modify it.
If we're talking non-stock, there are quite a number of some awesome, heavily modified 5th gens that I prefer over the vast majority of modified 4th gens.. but I think that's also because it's a more current platform, with some better options available.. one that stands out to me if MlkWagon on IG. He's local to my area and I've always loved the look. I think it also doesn't help that every other 5th gen build you come across on social media is running some sort of LT kit or is SAS on 40's, etc
I will say though, all of these preference are really, really close, a sweet build is a sweet build, regardless of the gen for me.