New chastity device?

I've been wearing my chastity device (a CB6000) for about six months now, with very few (very brief) periods of freedom. Goddess insists that I wear it all the time. It gives her control 24/7. It's uncomfortable when I get an erection, or rather when I try to get one - of course the CB makes a proper erection impossible. It can also be uncomfortable when skin gets trapped, as happens frequently. But it is a constant reminder of my status - and what Goddess wants, Goddess gets.
They say a change is as good as a rest so I am thinking of asking Goddess if I can try a new type - a steel one with a closed end. Here's the description http://www.steelpleasures.co.uk/?page=shop&shop_group_id=4&item_id=43
Goddess really enjoys using the remote control electric shocker on my balls whenever she wants to attract my attention, or just punish me. This is great for me, even though it can be painful, because it's a physical manifestation of Goddess's control and it's instant. I want to show her just how much she controls me and how far I am prepared to go to be her slave. The physical side is important, as well as the mental control. Hopefully she will begin to enjoy that aspect as time goes by. All I can do is my best.