Every broker can change the brokerage structure as per your trading volumes, SEBI only asks for the maximum brokerage a broker can charge a client but not the minium brokerage.
so if you are comfortable with your current broker, chat with him for reduced brokerage(you can also threaten him that u may move out of their brokerage house

they may reduce)
Rmoney is actually fast, no doubt in that, but the terminal is bad, very bad. It just doesn't update the ticks like your current application based terminal.
If you are a high volume trader say trading around 20lots per trade, i advise you to trade in Rmoney and watch the market in your current broker's terminal
thanks
y!msgr:nifty_trades