Opinions aside, it seems useful to have some lists developed in here with actual comparisons of the relative merits of each of 1.5 and the 2.1 leak. I'm hoping the thread does not degenerate into allegiances for one or the other so much as real data, although the experience users are having is part of the equation and should be commented on. 2.1 has this or that, but 1.5 does not. 1.5 is more stable in this area, but 2.1 is not. .. etc.