Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good design, but sluggish response

I am a fan of the design of the Trackman Wheel, but the cordless version is quite a bit less responsive than the corded version -- the cursor does not track the motion of the trackball as precisely with the cordless version when compared to the corded.Were I running it through the PS/2 interface, I would be checking whether the refresh rate had been set too low. The sluggishness has that kind of feel.If you like the design -- I do -- stick with the corded version if precision of response is important to you. A gamer would notice the difference immediately. Others may not be as easily annoyed.