Ya im sure wowhead is better, but when I forst started playing I didnt know of any site like these so I was SOL. Then a friend told me about thottbot and it opened my eyes to alot of shit I had no idea existed. I think its good for searching for upgrades though, very detailed search. But some things arent exactly accurate, when you look at bosses in Naxx it brings up a giant list of thingss, which 70% are not in Naxx at all. Atlas loot has served me well though, I have no complaints whatsoever about it.