Tough to say it's my favourite solo of all time but it's one of Slash's best ones.  He really manages to capture some great emotion with it:

To use Robin in the same argument as Izzy, Slash or Duff is plain dumb. Robin have been there since 1998 with a year off touring with NIN. If he wanna leave after 10 years then let him and stop blaming Axl for him leaving. 10 years is more than enough to put up a good argument as to why Axl is indeed acceptable to work with in the first place.