I used TDA years ago but never their ThinkorSwim. I can tell you from my past experience (and this is dating back a few years) that Etrade trading tools are far superior to TDA's. I also used Choicetrade and I wouldn't touch them again with a ten foot pole. I have used about five different online brokers over the years and I am now exclusively using Etrade, If you are a super active trader you can negotiate a commission with them.
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