Tighter cages aren't necessarily bad for health

I’ve been using a BON4M for roughly five years. I keep it filled up until evening, when I start to ‘turtle’ slightly. My Wife enjoys teasing me and making my head swell through the bars; she even uses a Wartenberg wheel on me, which I enjoy too. However, we nearly abandoned chastity early on because all the tighter, narrower cages caused edema for us. We experimented with different rings and spent money on ‘The Vice,’ but it just sits in our bathroom drawer now, taunting me. Does anyone else deal with this issue? We plan to stick with what works for us, I’m just curious if my experience is unusual.