Been on the patch for around 3 years now and it's been great. Fuss free, light periods no worries really. I seem to have developed some sensitivity to the adhesive used and it's becoming unbearable on my skin. 
After dd1 was born I had the implant in for three years but the final year was terrible constant bleeding basically. The pill wouldn't work I'd likely forget to take it. That leaves me with the merina, I had previous v heavy periods before dc so I'm not keen on even considering the copper coil. What are people's experiences with merina? I've looked at injection but I'm not certain plus the hassle of trying to get an appointment every three months puts me off!