I have the 2nd grille shown on this page:
Grilles
It's made only for the 2006 - Up models and what I love about it is that it covers the
whole grille and it's not just strips.
I've never taken it off, and not planning on it. If I really REALLY wanted to, I'd have to probably buy a whole OEM grille piece since the adhesive has been dry for a whole year now. It would be messy trying to pry the overlay off and I wouldn't want to worry about the paint damage and etc. I'm almost in a point-of-no-return!