As everyone else has already mentioned, fit is the most important, everything else is secondary. The best made boots in the world don't mean much if they're too uncomfortable to wear.

Since you mentioned that you mostly hike in hotter weather, I would recommend you do NOT get a gore-tex boot. I know they are advertised as waterproof and breathable, but they are a lot warmer than regular (non-lined) boots, and will cause your feet to sweat more. If you know your feet will be getting wet, like in stream crossings or stuff, I still prefer to have a boot that is not waterproof. Because waterproof boots will keep water out, but if your feet get wet, it will also keep it in. It's better to have a really breathable hiker that drains water well, than one that keeps your feet wet.

If you're not carrying heavy loads or going off trail a lot, a light fabric hiker will be much more comfortable than heavy leather boots. It just depends on the type of hiking you do. A good outdoor shoe store should be able to give you a good boot recommendation based on your needs. I personally prefer Lowa's, they're much lighter than they look and they fit my foot well. But I've also had merrels, vasque, montrails, and columbia. Almost all of the major brands will be decent quality, so just buy the one that feels the best

Also, regardless of the type of boot you get, don't forget about the socks. Good socks are just as, or even more imporant, than the shoes.