How do you like the RAT 5? I've been considering a RAT 7 for a while now.
While I haven't used them yet (still waiting for my RAT 9 on pre-order), I have seen several places note that the RAT 7 has a pretty good lag time in resynchronizing after picking it up and setting it down. I have also seen several places note that it seems MadKatz has changed something in the RAT 9 that has eliminated this problem. I haven't seen anything concerning the RAT 3 or 5. You may want to have a gander at these reviews( I chose them as it is the same reviewers doing both for continuity's sake):R.A.T. 7; Usage Results - Tracking and accuracy
The quality of the R.A.T. 7's Philips Twin-Eye 5600 DPI sensor was tested both in and out of game environments. Through ordinary use, a couple of interesting phenomenon became apparent.R.A.T. 9; Battery Life and Tracking
The first involves physically lifting the mouse. Raising the mouse and lowering it again incurs a short delay in responsiveness. When the mouse is placed onto a surface, it will can take up to one second before it’ll respond to movement. Gamers who depend on lifting their mouse to reposition it aren't going to be impressed. Testing revealed that this delay was dependant on the surface used. The worst case was on a Razer eXactMat, followed by a wood veneer desk. The former would delay for close to a second, the latter approximately half a second. On a white melamine desk, the mouse appeared to respond instantly. Furthermore, there’s no known fix for this issue, and the most that could be found on this matter were gamers dissing the quality of ‘Twin-Eye’ lasers.
The second is also lifting related, except it takes effect when the laser is still in range with the surface. Lifting the mouse slowly, then placing it back onto the ground causes the cursor to flick in a south-east direction. This is a known issue, often attributed to devices with ‘Twin-Eye’ lasers.
In Benchmark Reviews' previous review of the Mad Catz Cyborg R.A.T. 7 mouse, we noticed some tracking issues when the mouse was picked up and set back down. My personally-owned R.A.T. 7 mouse will only track reliably on my desk surface, which would be fine except that I have a separate keyboard/mouse drawer with a textured black plastic mousing surface. Even third-party mouse pads (admittedly, cheap ones from Best Buy) didn't help: my R.A.T. 7 would lose tracking so frequently that it was all but useless. In normal use the pointer would randomly become slow or jumpy, and sometimes take several seconds to re-sync and start tracking smoothly again.
Although the R.A.T. 9 mouse appears to use the same sensor as the R.A.T. 7, none of these tracking issues occurred during my testing. The R.A.T. 9 tracked perfectly on a variety of surfaces, including my keyboard drawer's integrated mousing surface, the aforementioned cheap mouse pad, and anything else I tried. I can only hope that whatever fix Mad Catz implemented will find its way into the other members of the R.A.T. mouse family.