Tom, I'm not familiar with these other products you mention, but the Riversedge website sells both BT tights AND footed leggings. There is one difference between the BT tights and footed leggings - the leggings are available in longer lengths than the tights, which is a great attraction to me (6'5"). Because BT tights just barely fit me, and not very comfortably, I switched to Stevens.
Now I'm even more happily switching back, because I prefer the BT cotton/lycra blend to the Stevens' "Milliskin," (whatever that is). Also, I never liked the shiny appearance of Milliskin, whereas the BT tights/footed leggings has your standard matte black color.[/i]