I've already read these two guides to choosing/optimizing mice:

http://www.esreality.com/?a=longpost&id=1300293&page=3
http://www.overclock.net/mice/173255-cs-s-mou...guide.html

I'm considering buying the Razer Deathadder, but there's a problem: I'm an extremely low sensitivity user. I haven't measured my exact sensitivity, but it looks to be around 36 inches for a full 360 degree turn.

So, from Guide #2, that means even 200 DPI will be enough for me (I use a resolution of 1600x900). Since many games don't allow a sensitivity as low as I use, it's best for me to keep my DPI on the low side (450 on the Deathadder).

However, Guide #1, written when the mouse was new, says reducing the Deathadder's default 1800 DPI reduces perfect control (i.e. the mouse would now behave unpredictably at a lower movement speed than before). This is really bad, because at my sensitivity, I'll often have to move my mouse very quickly. In fact, high perfect control range is the only reason I want to get a Deathadder.

My questions are (since those guides came out a long time ago):

1. Does the Deathadder 3500 (that's the version I hope to get) have the same problems at low DPI?

2. Did Razer put out firmware fixing the problem so that 450 DPI will give me the same range of perfect control as the highest DPI?

One last, somewhat unrelated question:

Guide #2 says that it's best to use a Windows XP sensitivity of 6/11, because higher causes pixel-skipping, reducing accuracy, while lower creates two sensitivities, causing the cursor to move slower to the right than the left.

Does Windows 7 have this same problem too (or any other problems introduced by going below 6/11)?