Friends, I'm no audiophile..I mostly play songs from my smartphone and laptop and don't know about receivers or for that matter sound cards and so on....I wanted a decent all in one system with least wire entanglements and had decided to buy sony mhc-ecl7d before I visited hifivision..The realization thereafter has been very enthusing..I want suggestions regarding my future purchase of a good music system. I don't care if it's a 2.1 or 5.1, a bookshelf or a satellite, whatever, I don't know about them.. My requirements are clear sound with deep bass and loudness..As I've said, the source will be mostly my Android smartphone and occasionally laptop.. I sifted through the contents of this site and have been impressed by swan m50w, and. Polk rti a1..I don't want to buy a receiver unless it makes significant difference.. My budget is 15 k and can stretch upto 20 k..The must required feature is thumping bass and clear sound.. Thanks very much in advance..