Hello All I am currently in a cb6000s and although its comfortable we would like to move onto a metal device. When using the CB for long periods it doesnt allow my penis to breath and the cage can become unpleasant, of the two devices a BON4M small or the Master Extreme device which would anyone recommend? I like the fact there is no padlock with the master and I like the fact that the Bon is similar in design to the CB. Any responses will be appreciated.
If you are looking to go to steel, think of the custom devices. In the long run they are not that much more over a "one size fits all" and way more worth the cost and comfort. If you are looking in the US and not too costly-- look at Mature Metal chastity devices. After that I would suggest Steelworxx - I wear a Steelworxx myself but it is a bit higher in cost.
PA devices are, by far, the most secure. If you like the look of the PA5000 but don't want plastic, check out The Tube Jacket from Steelworxx.
First question is what is your budget? If you can afford a Mature Metal or a Steelworxx definitively go that route. if not look around ebay for a more affordable stainless steel device that you can try out without spending a small fortune.