[BiosMarcel]

Well, first, you have to decide what continent, because the ping from continent to contintent ist mostly very bad, so lets say you'd go for europe, just choose a server that is pretty much in the middle and has enough bandwith (you might want a little more bandwith because of potential ddos attacks?) and also you should get a vserver and administrate it yourself instead of buying a samp server and pay 5x of what you'd pay for a better vps.

Just my humble opinion

My Server is in france and i pay 39Ђ a year (100Mbits Up and Down, 10GB SSD, 2GB Ram, full access)