As we all know the fact that Hunters, like Druids, Paladins, and Shamans, are a hybrid class. As such, it can be difficult for them to choose gear at times. Unlike Rogues and Mages, who can focus exclusively on 2 of the 5 primary stats, at least Hunters have some need of almost all of them. Here I'll briefly discuss how each stat affects you and what you should look for in items. First of all we make mention of Hunter stats then talk about its gear. The details are as follows.
   Intellect: Yeap, you're a caster! Like it or not, almost all your abilities use mana. Each point of intellect gives you 15 mana and nothing else. In the past, we thought that Intellect affected the critical strike chance of certain Hunter abilities, but this has been disproven.
Spirit: Spirit, simply put, raises your mana and health regeneration rate. Unless you're a troll, spirit won't help you regenerate health when you're in combat. I'm not a math genius, so I'm not sure exactly how much mana regeneration 1 point of spirit provides! Take it if you can get it, but don't go out of your way to gain spirit.
Crits: Increasing your chance to crit by 1% requires about 53 agility. As such, items which flatly increase your chance to crit are very valuable to you. Strike a good balance between attack power and % chance to crit. More attack power means bigger crits, which help you kill things quickly.
Strength: Your least useful stat. You can be sure that an item which provides little other than strength is a bad Hunter item. For each point of strength, you gain 1 melee attack power and nothing else!
Agility: Your most useful stat. Items with high agility are the staple of your equipment. Each point of agility gives you 1 melee attack power, 2 ranged attack power, 2 armor, and a marginal amount of crit and dodge. If you have the Survival talent, Lightning Reflexes, each point of agility counts as 1.15 points.
Stamina: A basic stat useful to every class. More stamina equals more HP. Don't sacrifice too much agility for stamina, but make sure you have enough to survive the inevitable melee encounters you'll face. Each point of stamina gives you 10 HP.
Now that you get to know how the most common stats benefit you, you can start selecting gear for various purposes. Here we are mainly talking about the raid PvE. See below:
Raid PvE: Have enough mana to use your damage abilities and utility skills and enough health to survive errant damage effects, but focus on raising your attack power and then your critical hit rate. Your goal is to deal as much damage as humanly possible while not taking aggro or getting damaged. If you're doing this correctly, you won't need as much health as you do when PvPing against people who see Hunters as an easy mark. If you're a Beastmaster, chances are you'll need to spend a lot of time and mana keeping your pet healed against deadly AoE effects. As such, Beastmastery is not the most efficient raiding build.
PvP: In PvP, you're going to take a beating no matter what you do. Your gear should provide a lot of Stamina, followed by Agility and then focus effects like +Crit, +Parry, and +Dodge. Extra mana helps you sustain battles longer, so go for +22 Intellect enchants on your weapons if you can afford them. A 'glass cannon' (Something which causes a lot of damage but is easily destroyed) does not fare well in most PvP.