[Primacron]

Snowflakian's answer is very comprehensive, just a couple of extra thoughts:

There are a couple of third party Arcees out there - I got the Impossible Toys one and am very happy, but a few other people seem to be less impressed.

I think the best options for (all) the Dinobots are the g1 versions, having said that Grimlock has had a few good figures - particularly the Masterpiece.

An extra option for Soundwave and Blaster are the smallest (WST) versions if you want roughly in scale tape players (and possibly cheaper). Otherwise the Music/Device label figures are excellent with reprolabels.

For Devastator there is the Classics release of Energon Constructicon Maximus, but it's pretty expensive now and only has the energon feet/hands. A third party called TF Club are currently working on some fantastically accurate figures, but that could be even more ridiculously expensive (which includes the not Hook and not Scavenger mentioned by Snowflakian).