Skanova has the best routing overall, both international and national, so thats explains it
this program is great and has a open source so anyone can use this and add their own servers
http://sourceforge.net/projects/tptest/
measuring UDP speed is great, cos then you can see if its any idea to tweak, eg if you have a 8 Mbps adsl connection and score 6 Mbps in UDP you will never go faster then that in TCP.
VanBuren