I would never trade an Avatar LE for an Avatar Pro. Not that there is that much difference between the two, but the $$ will be pretty small and not worth it IMO.
Plus with LE's going for 7k NIB now, I think Avatar LE's have decent upside potential. I like the chrome trim, shaker motor, upgraded AMP suit etc.
I miss my Avatar LE, it was a favorite of all my friends.