Got a little confused. Location of VPN company or the location you connect to? If its the location you connect, then USA. If its location of main Office, then prefer the country which respects privacy and doesn't fall within 5 eyes, 14 eyes or whatever eyes.
Well, There are many servers in VPN but mostly use USA location due to many of services are restricted out of USA. USA location in VPN is most favorite but there is an issue, most of the peoples are connecting with USA server location, that why I face lack speed.