http://www.mk5golfgti.co.uk/forum/index.php/topic,91731.msg998082.html#msg998082Some comments from me in the above post. erisin 7900 I went for, all in it is extremely good value for money (compared to RNS510) and looks the part BUT in my experience it was a bit like an iPhone - great at being everything other than a phone! It all worked well despite a few annoyances however, when I got the unit up to moderate volume levels it started clipping and popping. The least I expect from a stereo is reasonable audio!
I'm ashamed to admit I now have ABBA running through my head that will no doubt stay with me all morning "take a chance, take a chance, tale a chance......
".
You pays your money - alternatively I saw a post on eBay selling an RNS310 with Bluetooth module for £249, good price that!