I have a bern and red hi go helmets and my fishbowls don't mate up very well with either. My splices do.
Yeah I have a sandbox classic helmet and my oakley a frames fit perfectly because they're rounded, i think all oakley gog's are rounded. So thats why im also looking into splices/ airbrakes.. I justr cant decide, I really want fishbowls but hard to find colorways i like.