>>8826231I can only repost the half-baked idea for a list I made for the Japanese series some threads ago. This assumes you're going by the anime and not the JP Toylines, which often had different designs and decos than the cartoons did.First listing is the most accurate in terms of paint and sculpt, second is the budget option (which may not always be worth it).
Your pickings will be slimmer by the series.
Headmasters:
-Fortress Maximus - Takara LG or Titans Return
-Autobot Headmasters - Takara LG or Retro Headmasters
-Autobot Targetmasters - NA, only their weapons
-Trainbots - NA unless you want a terrible Shouki at a super inflated price
-Autobot Clones - Takara LG pack or Earthrise
-Monsterbots - Takara LG or Hasbro (only Doublecross/Twinferno is a regular release)
-Twincast - NA
-Scorponok - Earthrise
-Decepticon Headmasters - Takara LG or Retro Headmasters (Note, there are severe QC or design flaws)
-Apeface - Siege
-Snapdragon - Earthrise
-Decepticon Targetmasters - Takara LG or Titans Return
-Decepticon Clones - Takara LG or Earthrise
-Battletrap - POTP
-Flywheels - Siege
-Sixshot - Takara LG or Combiner Wars
-Soundblaster - Siege Selects
Super-God Masterforce
-Ginrai - Takara LG
-Autobot Godmasters - NA
-Clouder/Doubleclouder - Earthrise, Head/Godmaster version of human included with Skrapnel LG
-Metalhawk -Titans Return from Siege of Cybertron set, crappy BotCon version not worth considering
-Remaining Pretenders Bot/Con - NA, Generations Skullgrin looks nothing like the anime one
-Autobot Headmaster Jrs - All three humans themselves available in Ginrai/Godbomber LG set and Shuta is in the LG Wheelie (of all characters) set. Crappy Japanese exclusive of GoShooter is the only available transtector.
-Godbomber - Takara LG
-Grand Maximus - Takara LG
-Sixknight - NA
-Devil Z - Just get a spherical jell-o mold
-Overlord -Takara LG or TR as EXTREME budget
-Decepticon Godmasters - Neither available despite Hasbro decos being in POTP
