please guide regarding which discount broker to choose along with their comparision

respectful members,
please guide me as i searched 2 days for the discount or non discount broker for my main requirements as follows,

1) there should be good exposure of at least 5 times in futures, 10 times in equity ,

2) there should not be any hanging of trading software, and there should be good support,

3) i should be able to , trade confidently with that broker that means there should be a well known broker,

hence on these factors i finally reached to
1) www.asthatrade.com

2) https://zerodha.com/

3) http://rksv.in/

so please guide me regarding http://ift.tt/2bWIh6D first, is it a good broker, how much are there turnover charges. do they really gives the exposure they says.

the most important point is , is there software works without any hiccups any hanging

i read about zerodha that, now a days there software getting hanged very much .

please guide respectful members , as i am in very much need. i thankful to all of you in advance friends.

if sir, you have any suggestion for any other broker with at least 5 to 7 times exposure in futures and good exposure in equity, along with very low latency in real trading on their software, less hanging while trading. please guide sir, this will definitely help me as well as many other needy traders. thanks a lot in advance, friends for all your supports.

please guide regarding which discount broker to choose along with their comparision