best cock ring

I wish I could find one that fits. I have a couple problems:

First, my balls are very tight and high up close to my body, so one of them usually slips out and gets tweaked.

Yeah, it hurts. Is there something that could train my balls to hang lower?

Second, I'm a grower and cock rings that fit tight will get VERY tight as I get hard - or it breaks. I've broken at least a dozen cock rings. Point of pride, I guess.

I've tried adjustable snaps (catch the skin or hair), the pull tight kind (that look like a bolo tie) and lots of others. The guy at Rough Trade (leather gear in Silverlake) said I was too sensitive but I think he was trolling...?
 
Have you tried using lube to
I've been using a set of silicone rings for a while now. Love them. Gotten pretty good at getting the large one on without having to stretch it ( one ball in, then the second, then the penis ) Decided to try a metal ring thinking the weight would add to the pleasure. I bought one the same diameter as the largest of my set and cannot get it on to save my life! I can get one ball in and the second will just not go. The ring is wider but the same diameter. Any instruction or advice would be greatly appreciated.
Have you tried using lube to help slip things through? Sometimes I have trouble if my balls are drawn up close to my body, so putting one on after a hot bath/shower or sitting on a heating pad helps.
 
No need to take it off before blowing your load! Keeping it on actually holds the trap pressure and makes the orgasm feel way more intense. Just make sure it’s not painfully tight.

As for materials: avoid those cheap multi-pack TPE rings on Amazon. TPE loses its snap-back elasticity after like three uses, gets sticky, and rips easily. Go with platinum silicone rings every time. Silicone holds its exact tension forever, doesn't sweat oil, and washes off super clean.

Pro tip once you get comfortable: try stacking them. Put one behind the balls to drop them down, and another snug at the base of the shaft. That combo gives a ridiculously solid, locked-in pump without choking out your circulation.