If you really want to check, try using BT.
First, you go bt sites and find some popular files with many
seeds/user, if you choose those with a few seeds/user, it's hard to
go to the max possible speed.
When you add the download job, choose not to start downloading
immediately.
Get ready about 10-20 popular files with many seed/users, then
start them all together.
Wait for a while to let each job to connect to tracker servers,
slowly you should reach the maxium speed you can get.
