Difficulties with wearing a device? discussion

Hi there, Yesterday I noticed a tiny white mark on the base ring of my chastity cage. While investigating, the upper nose—the part where other components attach—snapped off. So now I’m unlocked, which feels uncomfortable. It was fortunate that everything went smoothly during my first three weeks in lockup. My Keyholder suggested purchasing a replacement cage immediately, but I haven’t been entirely happy with how I’ve searched for the right device so far. Previously, I used a resin model with a 45mm base ring, which felt just about perfect at that time. I’d prefer to switch to metal now, though I want to avoid overspending since I’m still confirming my ideal dimensions like size and length. Eventually, I plan to buy the MCN contender once I get all the measurements correct, but I haven’t reached that point yet. Since many steel cages feature a non-round shape, I’m uncertain about which ring dimension fits best when replacing my old 45mm circular one. Also, I need something convenient for urination—something with an open design rather than a tiny front hole that might never align perfectly and cause messes. I quite like this specific “pee hole” layout:

However, this model lacks the correct ring size (offering 41 and 51 instead of my needed 45). I struggle to convert a 45mm circular base ring measurement to other shapes like: product-image-531079972_grande_20b87c45-c272-400d-907f-3a2772a64bc3_480x480.jpg What dimensions would you recommend? I appreciated the size and tip of this next model, but I worry it might be too enclosed for 24/7 wear (especially regarding cleaning) and prefer something more open and lightweight. LTC1017tx3r_0706718e-958d-46d3-993b-1b1fd1317137_480x480.png

Can anyone suggest a case with that same open tip but more openness on the sides, costing under $100? Imhers