Performance -
To test the performance of the DeathTaker I stacked it up against my G5 laser gaming mouse the original Sentinel and the Thermaltake Level10M. I played through several levels of Batman Arkham Asylum, Modern Warfare 3, and Call of Duty Black Ops and Bioshock Infinite. I played each of these for one hour using each mouse to gauge hand and wrist fatigue and also accuracy and ease of use. I then sat down for some detailed Photoshop CS5 editing. These tests would be using the eraser tool and the cloning tool to edit and clean up small details in images. Unfortunately as these tests are all subjective I can only offer you my experience with it at this time.
Gaming -
Our gaming experience was good, but due to some comfort issues it could have been better. During our testing we had good accuracy and response when moving around, we did not see some of the typical lift-off issues (when you have to pick up the mouse to reposition) that are present in other mice. Where we did have an issue is with the cover for the weights. After about 30 minutes our hand began to feel like it was cramping. The reason for this is that there is a ridge in a place where most palms will want to fold over the mouse. Sadly this made our gaming experience less than what it could have been.
Photoshop Editing -
Editing with Photoshop was clean and easy with the DeathTaker, but again we have a feeling you will experience comfort issues if you are working with it for a long period of time.
Comfort -
This was the big issue with the DeathTaker as we have mentioned. It was simply not comfortable to use for extended periods of time. The biggest issue was with the ridge along the weight cover. This one flaw in design gave us cramps after about 30 minutes of continuous use (like during gaming). Other items that we had an issue with, comfort wise, was the length of the mouse from front to back. The DeathTaker is a little on the short side for most normal sized hands which puts your fingers or your palm in an awkward position on the mouse. For smaller hands this length of the mouse was not a concern, but the ridge still is.