Is Morphine timed release

Is Morphine pills time released? Or how long does it take to start working?

My doctor has given me a choice of starting on methadone, ms. contin or fenytnal patches. Which is best?

I've tried the patches whic irritated my skin so I'm asking about the ms. contin or methadone? Are they time released? Do they last all day unstead of like lortab n percocet n have to take them every 4 hours?