i had an a1000 for several years with a dead mouse, i was going to get one but the keyboard commands worked so well. that was over 10yrs ago then i got my 1200 with one of the rounded mice. i got a spare sometime around then that i still have now although i sold the 1200 to buy a 3000. i still havent used the spare but ive checked it several times and it still works fine. these older amiga mice remind me of the 1350 mouse i had with my c64.