My dislike of RC paper is that when compared to fibre the image looks as though it is sitting on ther surface of RC, there is little impression of depth. I don't really understand why this is the case for I know that the emulsion is exactly the same on both papers, at least the Ilford papers.

I have no problem with the longevity of RC papers, I made my first prints on Ilfospeed RC nearly 30 years ago and they are still perfectly sound, rubbish prints but no signs of deterioration.