I used to have the Logitech Z5500 and later the Z906, both 5.1 surround sound systems. The first one (Z5500 bought around 2004) had issues with power input which was replaced in 2014 with the Z906 but that one died recently.
So I bought the Edifier S351DB 2.1 Bookshelf Speaker System. AND OH MY GOD DOES IT SOUNDS GOOD, even better than before. I don't even miss the surround sound. :D
100% agree, Quality 2.1 is much better than an average 5.1. When I replace my hifi a few years ago I thought about getting a 5.1 system for movies, but the sound quality of the 5.1 systems were no where near as good as the 2.1 Onkyo TX-8270 I got with Monitor Audio Bronze 2 speakers. Holy shit it sounds so good! But it cost me £840 so it should sound bloody good! XD