I have the MX1000 laser mouse. I am very happy with it. At the time I was looking for a new/updated keyboard and mouse combo. The MX3100 combo set was not available at that time.
Thanks for the great article on the MX3000 set. Logitech keeps coming up with the newest and latest technology. I am waiting to update my keyboard now when the G15 gaming keyboard comes out. I look forward to seeing your review on it.