Hello and thank you for your comment. I buy my tango shoes from a variety of sources. I am sticking to low heeled shoes at present (2 3/4 inches or less heel). When possible I like to buy directly from the dealer. Currently I like Regina tango shoes (they have an online site). You can custom order any of their shoes with a low heel (the call this heel a 5), and they offer "training shoes" in the style Nizza in a lower heel. I also like Entoces brand sold by Tango Tana. Axis tango also has a few low heeled options rom a variety of brands on their site. I hope this helps!

Hello and thank you for your comment! For the medial sole of the shoe, it should fit well under the medial arch of the foot if the overall fit of the shoe is good. Some shoe makers have more pliable soles that allow a dancer to more easily pointe their foot in a tango shoes. A shoe with a more pliable sole will offer less support to the underside of the foot, and may not be a god idea for long periods of dancing.