Actually ami nije bitrate or other techniqel things temon bujhina...but as a general user I go with midium option...cuz BT theke jara download kore sobai money hoe abroad thake...amar dharona sobai fast net use kore (atleast adsl)...and download kore nije valo vabe dekhar jonno.So money hoe medium option tai best...so my request to admin that pls keep the quality with size.but quality preferable......thanx