I love my Mirena. I didn't immediately - I had spotting for a full 3 months after having it inserted. But now I'm on year 5 of minimal-to-no periods and I love it. I will get it replaced with another at my next appointment.
That said - you and your DH may want to reconsider vasectomy in the long run. I know we have discussed it, because at some point I will be peri-menopausal and it might no longer be best for me to have hormonal birth control. But, when perimenopause kicks in, pregnancy is still possible and in order to avoid an unintended pregnancy, it makes the most sense for DH to go for the long-term solution.