Hi, I have RA and I use Tech Athena stirrups - I actually found the sprengers too bouncy and rolled my ankles in them. Try to borrow some before you buy.
I would use her again. I thought I would have to buy a new saddle for my old horse, but she suggested a prolite pad & shims in the front, which would make it fit well and no need to waste my money:) Many people would have tried to sell, sell, sell.....