I too have gone from BFG's to Billboards, what a great day it was.
Pro's:
Ride comfort is great
Good in rain
Sticky so they grip nice in these light cars
So far the wear has been minimal and even (one season)
Look great
Con's 
Pick up every rock on the road (only a problem for the trailer queen type)
Flatspots until heated (as a bias-ply should)
Not DOT approved
I am very pleased..............