It depends on the setup for how I trade. Most mornings I am pretty quick in an out. Being able to customize hotkeys for sell half, auto set my breakeven, or breakeven +/- .10 etc based on long vs short, and being able to react instantly to seeing the right quote in the lvl 2 is what sold me. I still miss multiple features of TOS, like being able to see my share size and avg cost IN the montage, dragging stop losses, and better charting. In the end though, DAS just works better for me when it comes to making really fast precise decisions. I still use TOS for long term trading, but not for day.