Ask HN: Advice on good stockbroker / trading platform

I am day trading and want certain features from my broker. I'm currently on a spread betting provider because it offers a lot of features: 5:1 leverage Able to buy part of a stock Long/short both allowed Stop loss facility *Trade any stock on the NYSE But there's a single problem: The provider has fees based on a spread, which can range from $30 a stock to $300 a stock. Per day. So I want a broker with the 5 above features, but fixed fees, say $10 or $15 a stock. Then I can make a good profit. Does anyone know of such a broker in the USA? (CFDs don't count because you can only trade select stocks). The reason I didn't post to Quora is that most replies about stock trading tend to be close to gibberish. Finally, just a note: Google fails utterly to find any brokers with the above features. The search results are just a load of garbage. By the way, predictsoft is not the name of my company.