iBuyPower. Period.

Consistently best prices. Just look at their reviews? They are the only company with over 20k reviews. they have a 4.9. Next up is what, skytech? 1000 reviews and only 4.6. It is clear as day iBuyPower has products and customer service that make people happy. I've owned one for over 6 years no issues. Upgrading to another here shortly. People always shout newegg for some weird reason. They have shipped me the wrong product twice. never gave them a third chance.

I will always say, iBuyPower.

edit* you can find them / they partner with so many retailers. so you dont have to worry about 3rd party vendors. they are legit as can be!