TF Graphic novels, which ones are good?

Hi folks, got a quick question about the graphic novels.
I've got all the reruns of the 1980's comics, alongside the original comics from 150ish onwards and the G2 comics and graphic novels
I've also got most of the dream wave G1 in comic form, with most alternate covers, but not in Graphic novel form.
i recently bought a few more.
Reign of starscream
Alliance
Defiance
escalation
All Hail megatron 1
All Hail megatron 2
All Hail megatron 4
though only escalation has arrived atm.
so whilst atm i know i'm missing infiltration, and All Hail megatron 3, are there any other graphic novesl out there that are must haves? was the armada/energon ones any good? war within? spotlight? how about the crossover ones with GI-Joe or the WW2 or pre industrial storylines?
cheers for any info folks
I've got all the reruns of the 1980's comics, alongside the original comics from 150ish onwards and the G2 comics and graphic novels
I've also got most of the dream wave G1 in comic form, with most alternate covers, but not in Graphic novel form.
i recently bought a few more.
Reign of starscream
Alliance
Defiance
escalation
All Hail megatron 1
All Hail megatron 2
All Hail megatron 4
though only escalation has arrived atm.
so whilst atm i know i'm missing infiltration, and All Hail megatron 3, are there any other graphic novesl out there that are must haves? was the armada/energon ones any good? war within? spotlight? how about the crossover ones with GI-Joe or the WW2 or pre industrial storylines?
cheers for any info folks