>>7007609The later ones, at least in my experience, are all hits, I love em to death. I don't think you have much to worry about, being as all three of those are late-line releases. Your biggest worry will be clearing enough shelfspace, Zwauth is a monster and even the "normal" sized Aura Battlers are pretty girthy and have pretty big backpacks and wingspans.
If you still feel iffy on the line, try picking up one of the cheaper releases first to get a feel for what they're like. Just try to make sure it's one of the later releases, they definitely got better over time.