In my opinion Maple & Maple Pro is clearly the best PIM I have tried. So I have registered Maple at home and Maple Pro at work...
Just hoping that the CrystalOffice people are very careful when considering new features. Would be sad to see Maple go bloated.
Having said that I would like the program to be able to import and export ODF files. This would get Maple a lot of attention from the people (like myself) using OpenOffice.org.