I think they're a bit more expensive than Datek, and charge extra for limit orders, but if you've been using them and know what you're doing and don't mind paying the extra cost, I don't see why you shouldn't stick with them. It's been a while since I researched online trading firms, so my memory on them isn't too clear, but if you do use any feature that they offer that Datek doesn't stick with them. Personally, I'm using Datek because of the lower brokerage fee, fast execution time, and streaming quotes. Check their website out, it's pretty easy to figure out what features they offer and their help desk is pretty good also. Probably the other big thing to keep in mind about whether or not to stick with Ameritrade is how satisfied are you with the resources they give you to research a company to buy stock in. The only things that Datek doesn't have that I'd like to have one of these days when I have more money to invest with are trading by wireless and a dividen reinvestment plan. Like I mentioned before though, you may also want to look into Suretrade.com, their fees are compareable to Datek and the do offer these two services. I haven't looked too much into them yet, but I do know someone who uses it and he's satisfied with it. Maybe later I'll open an account with them just to see which is better, Datek or Suretrade.