I don't know which ones you bought, but I have the Logitech x530 5.1 surround. Paired with an external SoundBlaster X-Fi and I've never needed to upgrade. I think I've had mine about as long as you have. I know they're not top-of-the-line, but they have excellent sound quality.
I've bought Logitech 5.1 speakers like 15 years ago. I've used it for like 10 years, now my father in law uses it without any problems.
I don't know which ones you bought, but I have the Logitech x530 5.1 surround. Paired with an external SoundBlaster X-Fi and I've never needed to upgrade. I think I've had mine about as long as you have. I know they're not top-of-the-line, but they have excellent sound quality.
I am using logitech 2.1 since 2005 :D Everything got upgraded but this one remained.
Any chance of getting to know the model, if you remember?
I'd have to visit my parents in law to look it up. Might happen in a month or so. I'll try to remember it. 🙂