Pure str bow and cold/ice is great for PvE (killing mobs, or monsters). The downside is when you reach higher levels you can become totaly immune to freezing and frostbite (which are caused by ice). So PvP isn't that great with ice bow. Fire bow would work better for PvP.
Pure str, pure int, or int hybrid are the most common builds. Of course if you know how to play it right, you can turn a lot of builds into kick-butt machines. I'd recommend doing some searching here on SRF. There are a ton of topics on spear vs. sword, and other builds.
Good luck.
-Kayson
