I'll add in my opinions too, based on what I've seen. I'm in a harsh mood lately, so factor that in.
Revenge of the Sith - Collection 1, Wave 1 - April 2nd, 2005
III-01 Obi-Wan Kenobi - 6, good sculpt, action feature detracts seriously
III-02 Anakin Skywalker - 6 good sculpt, as above though
III-03 Yoda - 5, hugely long neck, returned to store, waiting on clearance
III-04 Super Battle Droid - 6 ok figure, but have no need
III-05 Chewbacca 6, paint is off, he's too big but it is a nice figure
III-06 Clone Trooper - 8, one action feature away from being a SA clone
III-07 R2-D2 - 5, crappy paint but didn't open so limited
III-08 Grevious’ Bodyguard - 7, neat figure, but returned to store
III-09 General Grevious - 7, better than preview, kept for lightsabers
III-10 Mace Windu - 8, a nice sculpt, the action feature is fun and doesn't detract too much
III-11 Darth Vader - 7, stupid chain, looks thin, but it is Vader
III-12 Emperor Palpatine - 8, action feature impedes minimally, sculpt is good
Revenge of the Sith - Collection 2, Wave 1 - April 2nd, 2005
III-13 Count Dooku - 7, passed on, can't judge fairly
III-14 Chancellor Palpatine - 8, nice sculpt
III-15 Bail Organa 7, looked good, but did not buy
III-16 Plo Koon - 8, nice figure but did not buy
III-17 Battle Droid - 1-10 depending on how much you want more
III-18 C-3PO - 6, ooh, pretty and shiny, piss poor articulation
III-19 Padme Amidala -

III-20 Agen Kolar - 8, nice figure
III-21 Shaak Ti - 8, nice figure, but I did not buy
III-22 Kit Fisto - 8, only gripe is his coloration doesn't match earlier versions
III-23 Royal Guard - 9, have red, like holster, small blaster, articulation limited
III-24 Mon Mothma -

I'm trying to stick to my original plan as much as possible, finding stuff down the road loose or clearanced. I bought and kept Grievous mostly for concerns about light sabers breaking down the road. Collection 2 (aka no action features) are just plain nicer figures, nothing to detract from them other than a poor sculpt, if it exists. You can nitpick them easily, but I really like the generally neutral poses, especially on the Jedi.
BTW, no blue senate guards have been found on Canadian cards yet, seems we're getting all red up here for now.