The Bantam TS-5 Pro is more customizable than the TS-5. You can choose the lightweight version (7.3–7.5 oz) or the standard (7.6–7.9 oz). You can also choose a thin grip (4 ⅛") or a standard grip (4 ⅜").
The Pro has a thicker core (14.3 mm) and a slightly smaller grip length (4 ¾"). It's slightly longer too at 16".