Thanks for all the information/advice.
Re: how much I leak.......I wear a full diaper (either Depends for Men or Tena brand) and usually just one per day. I don't leak hardly at all in the evening in bed...but sometimes heavy leakage during daytime if activities are strenuous...but, normally, I only partially "soak" one underwear per day. I guess that might be considered only "moderate" by some, but it's becoming very, very annoying after 4 years of wearing padding 24/7. I'm looking forward to getting the sling procedure and I hope and pray that it'll give me what I'm looking for--or at least help greatly. I'll report my progress.....Thanks guys!