Tell me the best broker for opening demat

hi, every body

i want to open demat a/c, for online intraday trading.... i want to do online intraday trading.... but i dont know who is the best for online intraday trading ...... sharekhan, ICICIdirect, Reliance money, Indiainfoline, Angel broking, Marwadi etc.... so pl. give me the answer as soon as possible... indiainfoline gives demate and trading acccount in Rs. 555/- lifetime they told me today on : 28/7/2008 its right or not... is their any problem... give me such true idea... thanks

Better to go for Sharekhan a/c which is offering zero account opening fee

http://signup.sharekhan.com/referral/zero/index.html