Maura, I have the Metalab jointed stirrups. Definitely better quality than some, and not as outrageously priced as the HS.
I love mine. I can't ride more than 1/2 hour in hard irons anymore. With the jointed, I can ride pretty much all day without my back, ankles, hips, and knees hurting too
I gave my old jointed pair to a trainer friend of mine when I bought the new ones. She's still using them. The only reason I switched was because I wanted the black rubber coverings, and the first set had grey.
I'm thinking about going to an all black jointed. The whole stirrup, not just the rubber cover over the joints, is black. Snazzy!