BitTorrent clients are numerous as the number of its users increases. The efficiency of these clients is different if we compare the original BitTorrent with the more advanced ones, Azureus and BitCornet.
BitTornado supports the coding which exploits the security engine to avoid download speed exploitation by other clients. So, you can parametrize the upload speed. For more comfort, adopt a priority rule during several simultaneous downloads.
BitTornado presents a quite simple basic function interface which is more flexible.