Call it a blessing or label it as a curse, but now there are far too many datacenters out there or may be the way hosts present, confuses you at times.

I was looking for cheap dedicated servers and found whole array of datacenters which i had otherwise never heard off. May be my ignorance, but then every server provider/host showing a different datacenter, it seemed like there are many datacenters.

In reference to U.S datacenters specifically, how do i zoom in my seach for reliable and stable datacenter?

What all things do i need to look for?
I usually ignore how many sq. feet their floor area is or similar details. Do they help?