I don't like twistoffs for aesthetic reasons. For that reason alone, I would never use them. I also discard other perfectly serviceable bottles because I don't like the shape of the bottle, for example the new non-twistoff Sierra Nevada, New Belgium bottles, Duvel, Satan Gold or Red, etc. I like the long neck shape.
Admittedly, aesthetics has no bearing on the suitability for bottling from a purely mechanical perspective. Some people use twistoffs and have success, others report failures due to fractures of the thinner glass or caps that don't seal completely.