I love Native's Hardtop XP. Can't say they're really better or worse than other polarized glasses, but they're the most comfortable for me. Several people I know have different models from Costa del Mar, but they all feel heavy and uncomfortable in comparison. The Natives aren't all that cheap at retail, themselves, but places like Sierra Trading Post and REI's outlet store will often have them for much lower prices.
Finally started carrying a sunglass case when hiking, but I'm about to test Native's warranty, since I've torn up a couple pair. I don't hold it against Native, because they really have had the crap beat out of them. I'm not careful with them at all-toss them in my pack, my work bag, the floorboard of my truck, things like that. Wear them swimming, kayaking, hiking, rock climbing, cutting grass, driving. I have light-sensitive eyes, and if there is any hint of sun, and I am outside, they are on my face. They aren't very heavy-duty glasses, so I'm pleased with how well they've held up.
The second broken pair was totally my fault, though an accident, while the first died a slow and torturous death. It's been boxed up to return for over a year, I just haven't thought to send them off.
Anyway, I like them enough that when I broke my second pair(at home), I walked straight over to the computer and ordered another identical pair.
The ones with interchangeable arms are a lot less prone to breakage than the fixed ones, which are even more comfortable, IMO. My first pair was interchangeable, while the other two are fixed. The "Reflex" coating is also a lot more delicate than the regular lenses, though it costs more.
