I have been using Thinkorswim (TOS -T DAmeritrade) for swing trading. I am interested in day trading, and am looking for a retail broker who will not kill me with fees. Do people even use TOS for day trading??? The platform works well, and I really like it. But I think it foolish to use it for day trading. So I am asking for help in making a decision on what would be the best platform for me. Reliability, cheaper fees, quick execution, and user-friendliness are my concerns...probably pretty obvious. Thanks!