I was lucky to be in the alpha program for Sizle and while the software is still a bit rough around the edges it is already a complete game-changer for sales. I've been primarily uploading my own presentations made in InDesign and using Sizle to distribute them to customers, and using the analytics tools to measure performance. I have not used the presentation builder much as I don't have a need for it at the moment, but that will be a tool that changes the game for presentations across the board.