I can sympathize with your situation, I leaked for 2 1/2 years, got down to 2-4 pads a day and saw no further improvement so I took action to regain my life. I had an Advance sling installed 15 months ago and have been totally dry since. I eat and drink as I wish, lift, run and cycle with no leakage or accidents, not even a hard sneeze or cough induces a leak. Sex has again become a pleasure and I no longer check out where the nearest toilet is when I'm on the go.
You have choices, research them well, talk with others that have experience and find a good surgeon, make that life changing decision.
Ron