I initially bought the treo 600. But, I returned it to Verizon after a week because I couldnt get used to the form factor (In my opinion, the treo's ridiculous tiny buttons are a pain, and I am not a fan of devices that require use of a stylus).The Samsung seems to be a phone that has added features of a pda and NOT a pda that has added features of a phone. I think this is the primary reason I like it so much more than the treo.I had zero problems syncing with MS Outlook on my laptop when I used the cable. I had to monkey around a little to get the wireless IR sync to work, but eventually figured it out and it works BEAUTIFULLY! I have been waiting a long time for a PHONE (not a PDA) that can by easily sync'd with Outlook for calendar and contacts. This phone does that. I dont plan to sync e-mail with this phone at the time, but I understand that can be done also. This phone solves my most critical need - to have my updated calendar and contacts while I am out of the office. I also like the fact that the MS Windows Mobile O/S is intuitive and very easy to use. Overall, I am happy with the phone.Cons - Expensive, does not include a camera (doesnt bother me too much, but it seems that it should at this price), a bit slow to "boot-up", internet performance is not as good as my 18 month-old LG from Verizon, small and poorly lit secondary lcd display, the phone needs a simple, hard-plastic belt holster (I'm not a huge fan of the bulky leather carrying case).