This topic is asking for trouble, as the hater (for whichever show) are just going to get nasty when someone else likes something they don't. So I'm just going to abstain here (which means I should've just not said even this commment)

 

1. Beast Wars (easily the best written Transformers series to date.)
2. G1/G2 cartoon (G2 cartoon was just a rehash of G1, so I'm counting them as the same series)
3. Transformers 2007 (Bayformers)
4. Cybertron
5. Robots in Disguise
6. Armada (I know Armada was overall a better series than RiD, but there are so many inconsistencies and lazy animations that make me dislike it more)
7. Energon
EDIT: 8. Beast Machines (wow, I dislike this one so much I even forgot to add it at first)

Those are the only ones I've seen.

 

1-BW
2-TF:TM07
3-G1
4-BM
5-Eng
6-Arm
7-Cyb
8-RID

The last five should have never have gotten shows.

 

1. G1 - Not really a big fan of season 3 though.
2. G1 themed comics from IDW and DW (havent read marvel)
3. Beast Wars
4. Transformers (Bay's Version)
5. Beast Machines
6. RID
7. Armada,Energon, Cybertron - only good thing about these is the Armada PS2 game, shows were terrible.