Well I have just made this account to ask these questions.

1. I play at 800DPI at 6th notch in windows. If I had set it to 3200DPI and placed it on the 2nd notch in windows, which is also 800 DPI then would it be any more accurate? I hear from people that you should play at your highest DPI and lower your sens in windows. Then the other side of the argument is to keep it at default sens and just change the DPI/CPI. Which is better? Please explain why. I use a G9x on a xtrac ripper xxl.

2. Speaking of G9x, I want to replace it with a different mouse. I have had the Lachesis before (not comfortable to my hand). Using the G9 felt alright at first but when I got into some RTS/FPS games my hand started to cramp pretty bad and neither grips help and I have no weights in the mouse. So I started looking at mice again and I realized I do like Razer products from the build quality of the Lachesis and functionality of their mice in general. Now I am considering getting a DA or a Mamba. I heard issues about Z-tracking issues with the Mamba's sensor and I don't understand what that means can someone explain it for me.

3. From the end of Q.2 If I do get a DA or Mamba would my mouse-pad affect the tracking? Its a xtrac ripper xxl.