I guess it’s a weird take, but it’s down to what I love in shmups. I don’t care for horizontal shooters, prefer bullet hells most of the time, and will praise Ikaruga and games that play like it to high heaven. For my personal tastes regarding the genre, the Dreamcast was a total monster, and I’m including homebrew software heavily in that evaluation, as I’ve always seen homebrew stuff on the same level as indie games for modern platforms: smaller scale games that are still just as legitimate as any piece of software made for the unit.
I admit though: I need to try more horizontal shooters. I need to just buckle down and… uh… “obtain” roms for these games, because the tax of owning them is too darn high for the act of just getting my feet wet with these titles.