23.98p is the way to go if you’re going for a theatrical release.

For dramatic narrative production 1080 23.98p HD video is the best choice. It most closely resembles traditional 35mm film shot at 24 frames per second (fps). This standard allows for relatively easy transfer to film for theatrical distribution.

While using true 24p instead or 23.98p would make sense for a project intended for a theatrical release, there are cost advantages to using 23.98p. The frame rate of 23.98fps is generally easier to handle in post production.

720 59.94p and lately 720 23.98p suffer from smaller frame size and in most cases higher data compression ratios. Editing these formats as true 23.98 progressive HD can be harder than working with 1080 23.98p.