Those relying on changes in electrical resistance tend to have poorer resolution than is needed for modern applications, while those that rely on capacitance require an ungloved finger.

Definitely more expensive than resistive screens, by between 10% and 50%, depending on who you talk to.

For instance, the resistive touchscreen on Sony's e-reader does not offer the smooth, fast response that the capacitive touchscreen of an iPhone or a Motorola Droid can.