Chastity device discussions and reviews discussion

Towards the end of last year I sought advice on purchasing a custom cage and wound up buying a Mature Metal Queen’s Keep featuring a double base ring along with the security screw: see the community page referenced here I finally received it in mid-January, but due to various reasons I’ve only worn it completely for a few weeks in total (including nearly non-stop wear last week, removing it just to perform the checks I’ll detail below). Unfortunately, however, it doesn’t fit perfectly, presenting these issues which increase in severity:

• The double base ring rubs me raw; I suspect this might be because I need a different lubricating liquid or cream and am still adjusting.
• The security screw occasionally pops out, although MM is already mailing new ones to me.
• The gap appears too small, though this isn’t critical since I can return it to MM if needed.
• When “deflated” (which doesn’t happen often because “ZOMG, I’m in chastity!:D”:p), there is a clear gap above my shaft near the end, allowing room for me to “grow.”
• When partially aroused, my glans presses against the cage’s end bars, and my foreskin pokes through; despite having vertical outer bars, I still get pinched (once there was a visible spot on my foreskin where it had been rubbed raw enough that I had to remove the cage). I believe the last two points are connected: since there is room to grow, I do so and thereby push against the bars, getting my foreskin caught. Thus, I feel I need a cage with a slightly smaller diameter (by about 1/4”) down the shaft’s end. MM has kindly offered me a discount on a new cage; here lies my dilemma: should I try another MM cage or look elsewhere? Specifically, I’m considering the Looker 02 by Steelworxx: If I understand correctly, after removing the 19% VAT (which doesn’t apply to me as I am outside Europe), the Looker 02 is cheaper and includes an integrated lock rather than requiring extra payment for a security screw like another Queens Keep. And - my primary reason for considering it - because it has a cap at the end, I won’t have to worry about further foreskin pinching. What does everyone think? I am not certain I would necessarily want the urethral insert in the Looker 02 (although it is removable, so I can try it if desired), and from what I’ve read, urinating and cleaning up afterwards might be messier because of the cap:s I’m currently undecided on either option but would appreciate input from those who have been doing this much longer than me!