What is the best/cheapest service to get real-time (as real-time as you can get) on stock options?
I'm looking for the fastest update on the ENTIRE market, with a few stocks prioritized, so I need the data to come in as fast as my internet connection will let it. The API can be in any language, although I would prefer C++.
Also, a trial service would be great.
Currently, I am looking at IQFeed which seems to be exactly what I am looking for. It is cheap, has a free trial, gives out 1ms ticks and has a C++ API.
Any other options like this one?