I sell them and used them, main thing is EXCELLENT software, far superior to TeleAtlas. Very accurate, spoke to the Road Angel rep about why, as it uses another type of software, the same used on Alpines etc...

HOWEVER, screen quality is a bit poor, a tad slow compared to a Tom Tom, a little bit harder to use than the Tom Tom but not by much. They seem good in terms of faults (as in ive had 1 back out of about 20ish, which is good).
Also they DONT do laser detection, which your current Road Angel would but is just as good in every other way. Other than that id be very tempted..but i wouldnt. I personally cant justify the money.