Figuring Out the Right Size for My First Device

Hi there! My partner and I have finally made the decision to dive into chastity play. However, I’m not entirely certain which device would suit me best (or even if my measurements are accurate)! Here is what I’ve measured: Length (from tip down to where the shaft meets the balls) - 4.5 inches (though this can fluctuate slightly depending on temperature) Length (from tip towards the stomach base of the shaft) - 5 inches I believe I should be measuring from the tip out to my scrotum, but I’ve included both figures just in case I’m mistaken. Girth - approximately 2 inches The CB6000 looks really appealing to me, but I worry it might run a bit small. Naturally, I want something that fits snugly yet remains comfortable. Will the spacers included with the CB6000 offer enough comfort and security, or would there be a risk of slipping out? I’m not particularly fond of the Curve model; the longer air vents on the sides seem prone to causing pinching - has anyone else experienced this? Another factor discouraging me from the Curve is how easy it is to hide under clothes. Unfortunately, I don’t think my budget allows for a Lori tube either – unless you know any UK retailers offering good prices? Also, being uncut does influence which device might work best, so that’s something to keep in mind. I’d really appreciate any advice on what path to take! Thank you in advance!