I have had the Nexplanon implant for 2 years and it kept me from having periods for the first year and a half (it's supposed to last three years as a birth control method, but I am very overweight so it's possible the dosage dropped off earlier than expected - the drug hasn't been studied in obese people). It's a non-estrogen method, I believe.
Personally, I've been considering finding an alternative method of avoiding periods (this is the primary reason I got the implant). I find that other side effects make it not ideal for me, and I'd kind of rather start to transition (start T &etc.) than replace this one with another 2-3 year implant.
However, if you want a solution that lasts about 2-3 years, it did work pretty well for a decently long time, and I haven't had to get a check-up on it or anything. I don't really notice it and it doesn't hurt me, so that is nice.
The biggest downside, I think, is the cost. I got it when I qualified for the Take Charge program at Planned Parenthood. Not sure if that's still going after the Affordable Care Act or if other programs have taken its place, but it was only available to me because I was low-income and uninsured at that time. Paying out of pocket it costs about a few hundred dollars.
EDIT: So sorry, I didn't notice you said something about the country you are living in, so the last bit probably doesn't apply to you as it's very US-centric!