Sometimes I don't understand the demand for accuracy to the point where you will pass on a pretty good figure for the unlikely possibility that a more accurate one will happen in the future. There are two outcomes with that mentality: 1) that no other figure is ever made, or 2) there will always be a more accurate version made if given enough time so whatever you buy -- even if you think it's perfect at the time -- will be dated at some point.
Gandalf looks to be a solid 7-8 on the current perfection scale (HT generally being best). Whereas I would put the old Sideshow figures (in general) at about a 5-6 now (those scores reflect the excellent outfits over the sculpt). For comparison, DiD and Toybiz hit 2-3 in general.