I think they rock, even the "new" GnR. I bought a bootleg of a concert they did in Las Vegas on New Years Eve 2000/2001 and it is friggin' great. I'm definitely gonna go to their show here in Stockholm in December.
BTW, my favorite album is and Appetite for Destruction and my favorite song at the moment is Out Ta Get Me. This changes on a weekly basis though, they're all excellent.
EDIT: Wheee! Post #13, and it only took me 7 months.

(Nominated Best Rock Recording - 2002 Detroit Music Awards)