Can anyone recommend a quality computer mouse please?

Hi everyone, I just replaced my Microsoft 1000 keyboard as the e and s on the old one no longer worked properly due to sustained use. I intended to buy the same keyboard as I had gotten used to it and liked the way it worked. In the shop they had a Microsoft 1000 keyboard and digital 2000 mouse package, both wireless, at a price which suited me so I bought them as my mouse was getting old too and not scrolling systematically. But after just one day the mouse's scroll function only works one time in two or something so scrolling down a DJ page is again a pain in the butt. So I have decided to buy a really good mouse on Monday. A wireless one. Can anyone recommend a good quality and reliable mouse? I don't need it to make the coffee or take the dog for a walk, I just want something simple, solidly built, and which scrolls efficiently. Thanks.