I've been flying quads for a couple of years as well (FPV 250 sized). I know three blade props have more punch, less battery time vis-a-vis a two blade props. I was specifically looking for behavior on the Tello with different size and pitch props.
A bit of a warning to any one using the octopus app. Make sure you deselect pretty much all permissions the app has except may be storage. There is no need for the app to access your SMS, contacts, phone, calendar and body sensor data at all.