The only truly inescapable chastity is a full belt. Most cages I find I can probably at least get the penis free. What device is right for you kind of depends on your own "devices" in term length, girth, growth, size etc so it may take some experimenting. You can buy knockoff versions of most of the high quality cages from the usual sources of cheap knockoff tat so if you just want to give some different designs a try it could be worth it to first buy a knockoff and see if you are at least somewhat happy with the fit of it before dropping larger amounts of cash on the real deal.
Personally I would suggest going for a metal cage, and the smaller the better.
I have a number of cages that I have bought from AliExpress over the years, and they are are all reasonably comfortable for extended wear. As Gregovic pointed out none of these are inescapable, for that to be so you would need a PA piercing.
If you start with one of the cheap Chinese ones to find out if chastity is really for you, you can then progress to the more expensive Mature Metal devices. Actually I have never found that necessary as the cheap ones work fine for me.
It will explain the ins and outs in-depth to make a decision.
Formally known as Slave_L.
I'm not yet very comfortable expressing my love for kink from my private life. I will therefor hide behind my username KinkInSpace and not allow any connections to who I really am. I'm sure you'll understand.
Bondage is like a foreign film without subtitles. Only through sharing and practice can we hope to understand.
A Jedi uses bondage for knowledge and defense, never for attack.
I am so smart! I am so smart! S-M-R-T!....I, I mean S-M-A-R-T!