I've been riding the first one you posted for a couple of years with endurance stirrups on my Tennessean saddle and had no problems at all with them. I did paint them black to match my saddle.
Pam is 5'4 and has short legs. She couldn't get her stirrups adjusted short enough for them to work on her saddle, not sure if that will be an issue with you or not.
I really like mine as it takes a lot of pressure off my knees or so it seems.
For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.