Birdlocked discussion

Alright, I’m facing a bit of a choice here. We’ve made up our minds to swap out the original Cb-3000 since it’s not cutting it for long-term use. My ring size is number 4 (1-5/8”). Should I go with the Birdlocked Mini or Classic? When erect, my length isn’t excessive, and when soft, I’m on the smaller side. This device will be worn around the clock until release. The main issue right now is sleeping in the CB-3000 causes severe pain.