Where to buy pc parts

im building a pc and where is the best place to buy and most reliable place to purchase pc parts

Newegg.com

pcpartpicker lists all the reliable sites in one, then it shows you combos and rebates to save you money and the cheapest deals without having to go through sites. You should check it out. 

i go with newegg paired with shop runner you can get almost all the parts free 2 day shipped except the case but hey it works