Gotta say i almost didn't ask the question about line, but would really have missed out. Good profitable reading...
So much of what's been said here has reinforced what i've found, confirmed what i've thought might be, given me something else to check out, etc. Ultimately saving time $ and maybe even lunch.

"I had the bass pro shops titanium leaders fail BTW"  
I had the regular Bass Pro leaders fail (nylon coated wire). Lost 3 fish in a row last year due to the snaps failing. I ended up cutting them all off and replacing with regular black wire snaps and so far so good.