I still use the original mouse that came with my Amiga 3000 when I bought it when it first came out in the eary 90's. Used every day in the office. I had to clean out the lint and lubricate it a few times. It still works flawlessly. I am on the second mouse on my 2500 Amiga - I still have the first one, but the left button is too sensitive. My new one is now 4 years old.