Prefer downloading the entire thing if there's a OOt of volumes left to read. Like for Berserk, I got my hands on the official DH scan volumes(38 have been out so far and I got all).
And the official Viz ones for the original Tokyo Ghoul(all 14).
Planning to do the same for the other manga that I'm gonna read, if there's official translation, otherwise, online with the best fan translation.