Fry's Electronics has everything i need to build a computer. Prices are a little higher than ordering online but that's expected. The selection here is far better than any local electronics store.
People have been saying the service here is a bit on the low side. But everyone i talk to is helpful at the least. I've had those "fast to answer" types of employees but they definitely help me out in the very least. Besides, if I make my drive down to Fry's as i'm sure for most that live in Vegas it'll be a drive, i'll always do my research in what exactly I need. I'll be in and then out within 30 minutes, considering i like to take a look around at the products.
I've built mutliple computers with all parts coming from Fry's electronics, all fully working and still operational. Some people say Fry's electronics does just that, it fries. But it never happened to me.
Location is a bit far from me, prices are good, cheaper than best buy, big selection, helpful staff (my experiences). I leave happy.