There're a whole bunch of models that support regular aptX...the Jaybirds, Bose' Soundsports, probably hundreds of headsets
aptX HD is a different story though, it's a new spec and the only information I can see about headsets that support it are on the aptX site itself. Not too many choices, but I did think that I saw the Audio-Technica ATH-DSR7BT at Stereo Electronic recently.
That's a full-fledged wireless headphone though, so probably not cheap. I'm guessing 250-300 at least. Also if it has any sonic similarities to the wired MSR7, bassheads will not like it.