Both datacenters have good connectivity, but if you expect most of your site visitors to be from North America, SteadFast would be a better choice since it is more likely that visitors from the US, Canada and Mexico will have better connection to a US-based server than to a UK-based one. If, on the other hand, you want to target Europe, you can choose BlueSquare as visitors from Europe will have better connection to the US than to the US.
A lot of people these days have broadband connection, so the loading speeds may vary by just a second or two, but for people with slower connections the location of your site may matter.
A lot of people these days have broadband connection, so the loading speeds may vary by just a second or two, but for people with slower connections the location of your site may matter.