I would n't buy a different one
Does this product much better?
I purchased this trackball January of last year (2011). Since then, it's put up with 10-12 hour per day usage. I wouldn't buy a different one, even if there was another of its type on the market.Pros:- Thumb ball design- Battery life is amazing (plus ships with a name brand battery)- Programmable buttons- Storage compartment on the mouse for the receiverCons:- Wireless (some would list this as a pro, but I really prefer a wired mouse. If your desk gets as dirty as mine, you'll understand why the first time you lose it)- Tracks get dirty quickly- Troubleshooting software requires a mouse -.-Overall, this is a great mouse, if only a little overpriced. But this is the only option, so I suppose Logitech would jack the price up a bit. If you're like me, and have been using this type of mouse since before you were potty trained, you'll want to get it. The range is about 15 feet, assuming no obstacles, and the response time is good enough for average gamers and home users. But really, if you're comparing response times, you should be going for a wired mouse (usually).Just a note on Logitech's support. I've had mixed experiences with Logitech's support, having been an original Revue owner. Recently though, I had to put in for the warranty on this device, as it was acting up and losing connection when it was used for long periods of time. Their support times were amazing, and after going through a few troubleshooting steps and giving them some personal info, they put in for a replacement. Four business days later, and I just plugged in the mouse a short while ago. That is incredible in my opinion.TL;DR: If you're used to a thumb ball, you have no other choice. Go buy it. 