I've been using Brother's MP3 USB HU (not sure what model no) for quite a wihle now. Sound quality is quite good, even on average speakers. No hassle when it comes to reading my USB drive. The only complaint I have about this HU is the Random mode is fixed to go at always a certain order. Track 9 >> Track 20 >>Track... Not a big deal to me though, just a bit annoying at times.