Nexplanon VS Skyla IUD

I have my second nexplanon in my arm right now, but I've been having some issues with having too many periods in a month. So I've went to my doctor and we've talked a little about the Skyla, but I'm a little apprehensive about it because I'm worried about the effectiveness of it. I'm sexually actively, we don't use condoms, and I don't really care to. So I was just wondering if anyone has made the change like I'm thinking about doing. Or if anyone can tell me their experience with the Skyla IUD. I would greatly appreciate it!