It looks from the STI breakaway stirrup site that the ropers and vislia models are "angled"? I have only handled one pair and they were a pretty small pair - don't remember if they were "angled" or not. Tack shops here are not real well stocked variety wise..

My STI's are not angled.

Saddlesore, I would recommend them for you. You could probably put some sort of taps on them to keep from hanging up. I've hung up once. Nothing else quite like it. Once is enough.

Mtrancher.Boy,I don't know after hanging upside down with only my shoulder touching the ground I'm real leery.
I was riding a three yr old green mule that slipped on a rock, fell and then jumped back up. I was lucky enough she did not bolt and I could grab one rein. But if I had been riding alone,I'd be dead today.
No way I could have freed myself.

I certainly understand. But knowing a little about your age, length of legs, and having a round-barreled horse or two I'd suggest looking into it. I know of a situation locally where the guy did die though he hung up in his lariat, not his stirrup. As much as I like Crooked Stirrups I am not presently using them on my newest Charley Snell saddle. It came with 5" Monels and I like them so well I can't change. The Crooked Stirrups are all 3" the last time I checked. They need more models including a breakaway stirrup.

Am I correct? The inside of the stirrup closest to the horse needs to be higher than the outside.

Go to the Crooked Stirrup website and all they will say is that no other stirrups work as good as thiers ( of course).

I have done quite a few miles in ox bow stirrups and they were worse yet than flat bottomed ones.I know a lot of cowboys and buckaroos use them ,but think it might be more traditional rather than function.

Vince-
I think oxbows could approximate crookeds by setting one's foot toward the inside of the curve. Setting to the outside would compound the discomfort of regular stirrups.

No, I don't think oxbows can approximate the affect. And most of us are not used to having our heel jammed against the stirrups as you need to do with oxbows. Oxbows are fine for 18-year-olds riding colts, but if you're over 40, or in my case, pushing 60, you need a better base for your foot and better weight distribution. Along these lines, I've quit wearing boots with leather soles. Too slick and too hard. I have a new pair of 16" Hondos with leather soles but the local cobbler put on a rubber overlay for only $20. Y'all are invited any time to stop by, ride my Charley Snell saddle and try my Crooked Stirrups. The wife would probably even make a pie and invite you in for coffee.

I tried oxbows once, and my feet hurt and I couldn't wait to get them off

i only ride oxbows. the solution is to quit putting weight into your stirrups and ride off your seat.