I think any bottom air flow cannot be “relied” on as leak proof. Unfortunately my preference is usually bottom air flow but my fave rta is the Zeus original. Never a lead from those!! Great RTAs and for top
ye i went the topair road at first per advice to avoid the leaking (big part i gave up vaoing first time around).. but do you know, that thicksponge effect it gives, is just my thing. but i'm not sure anymore that's what always what does it.. the resriction on axial with 2 holes is kinda similar.
you know in retrospect i'm kinda happyi never done the two everyone in the world has; zeuses and rabbits. if i'd gone to a shop or taken the first advice that's probably where i woulda started. not that i know either way of they're good or bad, just researched enough to find something for my sweetness