Time to get greasy Tobey. jejejeje
I stoped testing earlier cuz my g/f arrived and my time got caught up cooking and eating my desert.
Anyways, when my G/F arrived I had just flashed with the 20757 SYS and tested pairing my 2 phones and 2 laptops and it worked fine. I even tried A2DP through my laptop and played some music through my laptop made a call into voicemail, hung up, music kept playing, walked far away from the computer and the bt disconnected as predicted and music kept playing through my phone's speaker. I made a call into voicemail again on the speakerphone, ran that for like a minute hung up, music kept playing, walked close to my laptop again and it automatically re-paired and kept playing through my laptop. I was even able to transfer a small mp3 to and from my laptop while playing, the music skipped a bit while I did that but it kept playing.
I unpaired and continued using my phone as normal and my g/f arrived. So BT with the 20757 SYS I guess is working pretty well for me.
One thing I did notice though while my G/F was here we tried to do some eBay shopping through Opera, wich has worked fine before for us and the browser's data would stop working or just be really slow all of a sudden. Don't know if its a signal issue or ROM related. I'm back in the lab and I'm gonna connect the phone to my WiFi and test again make sure its not software related.
Afterwards I'm gonna reflash the 20931 SYS using the stock default settings see if my BT at least turns on like that, that could maybe identify some conflict between the OEMs you have selected by default vs. what I select.