I've used them all, and Medved Trader (MT) is hands down the best charting program out there. I've been using them for 3+ years now, but I was also a long-time QuoteTracker user, until TDA shut it down. MT is so much more than a charting platform though. Provides broker independence, multiple trading vehicles (DOM, Chart-based, interactive), provides an exceptional stock screener, and is infinitely extensible through drag-and-drop Paintbars (for non-programmers) and/or C# logic (for programmers). Best part of MT, aside from its functionality, is the superior, almost real-time support that you get from their team. They really care, and that is what sold me from the outset.