The posts above probably answered your question but anyway... I actually bought HTC's Clip to test the claim that the BT 3.0 aptX codec actually sounded any better than standard BT 2.0 CBR.
I actually performed two blind tests with it, against my car's BT and against a pair of cheap ($100) Samson powered speakers + a $35 Miccus BT adapter from Amazon... I couldn't tell then apart in either instance, so either aptX is even more of a gimmick than Beats, or you need a gifted ear and/or pretty high end audio gear to notice a difference.
FWIW I CAN notice the difference between Bluetooth and a regular 3.5mm cable in either test case (car stereo and my desktop's powered speakers), BT audio seems a little flatter usually, bass is a bit softer in particular, but it's not a big enough disparity to prevent me from using BT in the car on a daily basis out of sheer convenience (just get in and hit play, phone still in my pocket, hard to beat).
I just EQ the bass up a bit to make up for the BT compression. I dont use BT at home at all tho unless it's in the patio or the garage or something. The best part of using BT in the car is having steering wheel playback controls, way safer.