I couldn't imagine my Tungsten without KeySuite. I bought version 2.4, and upgraded for free to 3.0. It syncs fast and is a vast improvement over the native Palm Address app. Essentially, it's Outlook for Palm. I tried Intellisync in the past, it simply mapped the limited Palm fields to Outlook, there was no real increased functionality for the price. That wa sa couple of years ago, I can't speak for the current version. I am very satified with KeySuite.