PL259 has non-constant impedance, which is the main reason I don’t like it.
N type is a near perfect connector except huge size, which has constant impedance, supports frequency up to 11GHz, is waterproof and can be used with high power.
SMA is similar to N type but has smaller size and lower power.
U.FL will be the only choice if you only have very tiny space. (The situation never happened in ham radio)