i have had the marina for 18 months now and its the best thing ever for me ... no periods ... no pmt ... no weightgain .. in fact the only problem i have is that it is not longer than 5 years
having it inserted by someone that knows what they are doing uis vital tho and it did take about 3 months to settle down for me but the benifits far outweigh the downfalls
whatever you decide to do i hope it works out for you