Talking about price difference. Amazon has these VXBs for $99, while original BTunes website (I have a link in my review) has it for $79. Gets even better, after I posted my review, Danny (of WorthyAudio) replied with a link they are running promo, selling these for $59 (http://www.worthyaudio.com/voxoa/btunes)
Regarding Noble BTS, I should have it in a week (along with Savant review sample), so will let you know. I have tested a number of wireless receivers/adapters in the past, they sounded like garbage, perhaps due to lack of the latest BT and not being able to support latest codecs (like apt-x). If you can't remove the cable or if your cable has other than 3.5mm or 2.5mm connector (very disappointed DT 1770 Pro going to have mini-xlr connector), you need to have an adapter with 3.5mm female jack. BTS will do the job, but I don't have firsthand experience with it yet. But if you have a removable cable, this VXB is the cleanest solution to get rid of wires.
Regarding review queue, got a lot of promises, some going back as far as 6-7 months, so at this point I can only talk about what I have in hand which is Luxury&Precision L5 Pro DAP (should have review toward the end of the week), Lotoo PAW 5000 (review sometime next week), and DUNU Titan 3 and Titan 5 (also sometime toward the end of next week).