Leadcore..... If there was ever a subject to cause debate on here then it's the L word ......
Read up on a few threads on here and make your own mind up. If your comfortable using it and happy with it then it's up to you,there will be some that slate you,there will be some that agree with you.
I use to use leadcore a few years ago,but if I feel the need to use a leader I use the unleaded stuff. It really is up to you mate