Casio Just released a 76-key version of their smaller 61-key CT-S1. This new version is the CT-S1-76 and you MUST check it out! Check out my full CT-S1 review at    • Casio CT-S1 - Overview / Review / Demo   to learn about this and the smaller version.
PianoManChuck is an authorized Casio Dealer and can save you some money on this when you get your quote at https://www.PianoManChuck.com