What is the best source for real time options data?

Looking for a good source for real time volume and volatility data with a good charting package. Have used Interactive Brokers historically and was for the most part pleased, but their offering leaves some things to be desired and I wondered if other traders had better luck with other data providers.

 

Thinkorswim

 

I use optionsxpress, and they are pretty good with their options platform.

Jun
-tplinvestment.com

 

888options is free and great for real time quotes and calculation of the greeks. No charting package, though. As another poster mentioned, TOS is probably going to be your best option.

http://888options.com/quotes/default.jsp

 

Thanks for this guys. Does Thinkorswim's package have some kind of "heatseeker"-type function that tracks volume and volatility gainers?

 

http://www.opradata.com/

 

Yes.