Man, I can't find that older recording! I hope it wasn't deleted by 'accident' haha.
Anyways - I did some other comparisons between fingernail and fingertip playing here: https://soundcloud.com/laguitarraclasic ... nido-en-la
It's not a very conclusive experiment, though. It's the same guitar and same recording setup, but the fingertip playing was done on real gut strings tuned down a semitone.
And, also, like I told Rob - I played for nearly 20 years with nails while I've only been playing with my fingertips for a little over a year. So, in that regard it's not really a fair comparison either.
Jack - I love low tension strings. I don't think I'd ever go back!