Jailbird vs. Queens Keep

My Queen has told me to buy a metal cage, and I’ve narrowed it down to either the Jailbird or Queens Keep. Does anyone have advice on which is superior or what sets them apart? There isn’t much detail available on their official site, so any thoughts would be helpful.

Separately, after being denied and locked for five days, I discovered that gripping my CB6000 allows me to cum by essentially jerking it off. It requires significant arousal but is definitely doable.

Two questions regarding this: Is a Mature Metal cage different in any way, or is the experience similar? Also, if I reach completion like this, will it feel like a frustrating ruined orgasm since I can’t pull the skin up over the glans during ejaculation?

I appreciate all feedback. Thanks!