Chastity device discussions and reviews discussion

Considering that a device needs to be comfortable for both daily wear and sleep, with the general consensus being that less room is better for sleeping, just how small is too small? My current fit allows me to touch the end when standing. If I’m at my smallest size, there’s about 1-3mm of space left before hitting it, plus plenty of side clearance. Naturally, everything gets filled up when erect. But while sleeping on my right side (my usual position), my penis retracts into the cage because it anchors deep in the pelvis, creating roughly 5-10mm more room than I have standing up. So would you prefer a device that compresses your cock slightly during the day to reduce nighttime space? After all, flaccid tissue is quite flexible. If so, what’s the limit for compression before it becomes too tight?