Thanks bpr, I've read your thread now, amazing !
I understand icharts, GFDL, Neotrade etc. are some authorised data providers, though expensive.
However, if I am trading through Zerodha, should I set the buy/sell limit prices as per the bid/ask prices shown by Zerodha's NEST, or, say, as per Amibroker+Neotrade for more consistent order execution?
Also, just to clarify, is NSE TAME accurate to levels of icharts, Neotrade etc. for bid/ask quotes?
It will be great if you could suggest by your experience.
Thanks in advance.