I've had the wahoo elemnt bolt for a few months now, my previous GPS was a Garmin 705.
I'm really liking the wahoo, the maps are much clearer, and the directions are brilliant - took me to conwy from manchester this summer with no wrong turns.
The GPS seems really accurate, and much better under dense foliage than the 705 - though that's to be expected given the age difference.
The only gripe I'd have is it can take upto 5 seconds to autopause at traffic lights - not a problem as such on a longer ride, but makes it look like you're commuting quite slowly!