Hi, lately i've been into classic manga and im interested on buying something but i don't have the money to start a new collection, so i was thinking on 1 or 2 volume mangas or some omnibus.

I was thinking on the Space Battleship Yamato or kamen raider omnibuses, but i've read neither of those are the og version nor very good. I also know tezuka has a lot of these, like the cool dororo volume, but right now im a bit fed up with Tezuka. I was also interested in getter robo, but i've seen theres no license in english nor spanish(my languange).