Right. Resonator is pretty much OK unless you need to be dead on with timing... like say for... I don't know... an ALARM CLOCK?
Crystals "tend" to come with a higher price tag and the need for 2 other capacitors, as already mentioned... I'd like to add that they are also more delicate. Drop one... or subject your design to a lot of shock and there's a chance you have an ex-crystal.
Audiophile "doityourselfers" will spend 100 times the cost of a part because they convince themselves they have a better results in the end. If you feel the need for more accurate timing... by all means get a crystal but then it's up to you to determine if you spent your cash wisely. I mean, do you have a way to measure the accuracy between either choice?
If you have some 16MHZ crystals you rescued from Junk Parts, by all means go for it.
I think what we are saying here is... resonators work... and they require fewer total parts. Simple is good.
pw