Picking the right product depends a lot on what your needs are. The basic Mac features will suffice if your needs are simple. If you’re going with Microsoft, you’ll get a copy of Entourage with the Office for Mac product. SOHO and Daylite both offer some features targeted at those working in sales and anyone who bills for their time. Chandler currently supports only calendaring, but will include the rest of what you would expect from a PIM in future releases.