A vascectomy is “easier” in that it’s generally done with the patient fully awake, so there are no anesthesia risks. Essure is sometimes (although not always) done with some level of sedation, which carries risks.
Essure is “easier” in that it uses holes that are already in your body to work through, instead of requiring a surgical incision.
Most women to get Essure are up and back to their normal activities within 24 hours, although they’ve generally got some crampiness and yucky feelingness. Most men after vasectomy need 2-3 days of kicking back on the couch with a bag of frozen peas on their crotch.
The risks of Essure are slight, but include perforation of the fallopian tubes or uterus, either during the procedure or in the weeks afterward as the scar tissue forms. This could require antibiotics or surgery. If your insertion is difficult, an x-ray of your uterus and fallopian tubes (hysterosalpingogram) should be done, as most early perforations do NOT show up on ultrasound. If the insertion was easy, they can just do an ultrasound to verify the correct placement. There are some procedures that cannot be done if you have Essure, like endometrial ablation, so if there’s a history of “female troubles” in your family, be sure your doctor knows about them before you decide Essure is right for you.
Risks of vasectomy are likewise slight, but include infection at the surgical site which could require antibiotics.
BOTH require a follow up appointment 3 months later to check if it worked okay, and another form of contraception needs to be used until that’s happened. Most of the time for both procedures, you’ll be good to go at 3 months, but sometimes with both procedures, you won’t be fully blocked, and will need to go back again in another 3 months (and keep using your alternate contraception.)
Neither, of course, protect against sexually transmitted infections.
The failure (read: pregnancy) rate is higher with vasectomy, but not by a whole lot.
Essure effectiveness:
99.83% at 5 years
(1.7 pregnancies per 1000 women)
Vasectomy effectiveness:
98.87% at 5 years
(11.3 pregnancies per 1000 women)
http://www.essure.com/is-essure-right-for-me/essure-vs-other-birth-control/essure-vs-vasectomy
Vasectomy can sometimes be reversed, Essure cannot. In reality, both should be considered permanent, though.
(This is not a comprehensive comparison, but what I can think of off the top of my head.)