I like resonators (fewer parts, easier PCB layout), but the often-quoted "they're cheaper" seems to be pretty "theoretical." In practice, there are large numbers of 16MHz crystals on the "sort-of-surplus" market (eBay, Allectronics, goldmine, etc) that go for prices lower than you can find for 16MHz ceramic resonators.
OTOH, the often-quoted superior accuracy of crystals assumes that someone looked carefully at the crystal specifications and oscillator specifications, and carefully picked capacitor values to match everything, which is ALSO rather "theoretical" if you're buying a random crystal from a random vendor and throwing on those 22pF caps from the official schematic. (and I'm not sure that the official design/partslist did that analysis either.)
Either crystal or resonator is very likely to be "good enough for most practical purposes, except clocks."