Differences among various G1 re-iss'd Starscream, Soundwave?

I'm looking to get one of these guys for my wedding anniversary this weekend, and I'm wondering what the differences are among the various re-releases, such as Takara Re-issues, Commemoratives, and Encore.
I'm not a huge stickler for G1 accuracy, but I would at least like the colors to be correct. I know the TRU re-issue Soundwave had the double-tape chest, which is really cool. Could someone list some of the different Starscream variations? Thanks!
I'm not a huge stickler for G1 accuracy, but I would at least like the colors to be correct. I know the TRU re-issue Soundwave had the double-tape chest, which is really cool. Could someone list some of the different Starscream variations? Thanks!