Chastity device discussions and reviews discussion

Hi there, I’m quite new to this whole setup. I was leaning towards picking up a Holy Trainer 2… but I have so many questions… and the cost is steep! It’s too soon for me to afford any errors right now. To give an example: how do I decide between short or regular versions? I can see the measurements, but… honestly… what will actually work best for me? I measured my ring size and was surprised to find out that I need the biggest one! Here are some details about myself: I’m definitely a grower (flaccid length is around 2-3”), ~4.5 when erect, and quite high/tight. Comfort ranks highest on my list of priorities. What factors should I weigh when choosing between short or regular? Thank you!