I also started with Altec Lansing, ATP3 then Altec Lansing 621 ( for about 7yrs ) and saved up money for the Z-5500
The 621 served me so well the audio quality on it is very similar to the Z-5500 and its still in a very good working condition as of now.
Im just saying taod2x nako wala mo audition ug 2.1 units.