Quotetracker (www.quotetracker.com) is still the best charting software in the industry IMO. I recently had an issue with QT/TWS and they (QT) resolved it promptly with IB. P.S. I am not affiliated in any way with QT nor IB.
I've used it off and on for years, but have been disappointed over the last few months. I've seen more bugs showing up and still have an issue with the alerts that crashes QT every few hours they haven't fixed. There's a lot of opportunity for somebody with competing software. I've been looking around for alternatives but they all have their drawbacks.
Best I have used also. I had Trasdestation, E-Signal, and Q-charts but this is the best. Support (if u ever need it) is unbelievable--if it takes them more than 20 minutes to answer an e-mail someone died there. GT
I like the QT's sliding bar on the bottom of the chart -- it lets you zoom in and zoom out quickly. You can return to the pre-zoom chart effortlessly. This must be the best zoom implementation of all charting softwares.