Origin B2 I believe is better than the Road Angel because:
It is smaller and much more discreet looking
It has a docking cradle, meaning u can take the B2 out of the car in a milli-second (good for security reasons)(nothing needs unplugging, no mess, no flaffing about - unlike Roadangel)
B2 has a million menu options, allowing you to customise the unit to your needs (ie turn off blackspot warnings, turn off school warnings, change Volume/speech settings, change lighting options, ability to add a deflector/laser jammer)
It also doesn't BLEEP unless you ARE SPEEDING. Very handy if u are sitting in a traffic jam approaching a Gatso!!!! (the Road Angel justs BLEEPS AND BLEEPS until u past the gatso. Not good in Grid locked London)
The B2 also displays the SPEED LIMIT (of the road)of the approaching Gatso (or specs or whatever..)
Excellent customer services/back up from Manufacturer.
I must add that neither B2 or Roadangel has ever failed me, or given any false warnings. Always update them every 2 weeks for better protection.
As I have heard, RoadAngel2 is much better than RA1. But still some way off the B2..