Don't know much about Odin, as have used NSE NOW, NEST and Sharekhan's TradeTiger. So can fill up the part of the information, which may help.
Regards TT :
1. It is realtime, and don't see any issues with latency.
2. Charting is fantastic, with great intraday and intraday chart upto 30 days for swing trading, and EOD charts. (Guess no other trading platform provides these three in combination) Intraday, and upto 30 days intraday charts can be seen on a 1/3/5/10/15/30/60 or any other time frame of your choice. 4 Hour chart? No problem with TT, as long as you want to see the intraday data upto 30 days. The indicators are also customizable, and cover the ones used by traders the most. No other charting tool may be necessary to trade if you have TT. Furthermore, there is no limit to the stocks in your screen, and you are not restricted to 30 scripts. Why is that important? Say there is a stock that is trending and is as per your trading setup, how can you get to see it in realtime, without deleting a script or adding? Basically, I just sort and look for the top 5-7 scripts that are trending up or down. So this is another great aspect of TT.
3. TT also has pop-up alerts. You can set the trigger for any no. of scripts to alert you when it has reached a particular level. It helps to plan the trades.
4. TT also provides research. E.g if you are trading commodities, you get an alert when important data such as NFP, Crude and NG inventory etc. is released each week.
5. The question remains of brokerage, with different franchisees quoting different fees. Speak to different sub-brokers and get the best deal (which may be more than that charged by discount brokers though) So should you want to go for it, you will have to pay a higher brokerage or generate a certain minimal brokerage.
Trust this helps.