Logitech Z-5500 Digital 5.1 Speaker System. Bought it on sale for about $250 back in 2005, I've used it for hours almost every day since then and still absolutely love it. The only issue I've ever had is the back-light of the control module breaking but it's just a minor annoyance, just need to shine a light on it at nighttime to see the screen.
I got a set of Z-5500s right around 2005 as well. Unfortunately mine started making super-loud popping noises at random a year or so back. So far I haven't found anything to replace them, Logitech doesn't make anything in their class any more either.
I've had a set of those circulating through the family for well over a decade. But, they don't sound all that great.
Fort the same budget, I'd recommend instead to buy a higher quality pair of bookshelf speakers that you would actually enjoy using fort the rest of your life.
I also made a YSK post recently to explain how to objectively identify good speakers.
I got the wireless 5450s. Had to replace the controller. Getting the replacements it was a guess between the sub and the controller. Which netted me backup of everything except the controller. Still works just fine and was used as primary surround sound until recently.