I used to have a Scottrade account. I moved over to Fidelity 3 years ago when they reduced their commissions on trades and also offered zero commission trades on iShares ETFs. They're the best discount broker around.
If you want to piss away your money gambling on options, be my guest. But if you want to invest for the future, you can't go wrong with Fidelity.
Buy and hold with broad market, low expense ratio index funds. Get rich slowly. Rinse and repeat.