"had my mirena inserted july 30 2014, i am giving it such a high rating at this point because i have nothing but positive experiences so far. 
unlike most people i had it inserted after having no children, the insertion was slightly painful but just felt like a bad cramp that went away quickly. the cramping stopped 2 minutes after insertion and then i had some mild cramping later that day. spotting is minimal to null, only noticeable on bathroom tissue. 
-for anyone thinking of getting on before they have had a kid: i was given misoprostol vaginally to soften the cervix and took ibuprofen for 24 hours before to help with cramping.  the misoprostol did not cause me cramping or discomfort as i feared it would."