This is an office on the run. I can now head out on a business trip with just one device and effectively have all the electronics I need in one small package. I used to carry a cell phone, a PDA and/or laptop, and a GPS, plus all the associated cables and chargers when I was traveling. Now I take one device and have everything I need at my finger tips. My calendar, my contacts, favorite photos, some music, and always up to date email.Pro's: A fantastic all in one device for business travel. The phone reception and function are much better than my Razr. The integrated functionality between the phone, pda and email is great. I have the iPAQ set up to send and recieve email via cellular. This is a huge help while traveling. The ability to send and receive email over my cellular service is much better than wi-fi or by syncing with a desktip. By the way, the 6900 series does have wi-fi. Web browsing is good over both wi-fi and GPRS and is even faster over EDGE. Windows mobile 5 has a very functional copy of IE. Having the GPS with me all the time is very useful. I am using Telenav by NavTec which downloads maps and business addresses over the cellular service. No need to download maps from a desktop PC. The reception of the GPS antenna is amazing. It works much better than my Garmin 60CS.Things I would like to see HP improve: The camera is slow to boot and slow to take a picture. HP can do better here. Battery use is also a concern. When I am traveling on business my days are often 12 to 15 hours long and if I am using the GPS at all, the battery needs a boost sometime during the day to make it through. I purchased a slick little charger kit from Gomadic that makes this easier, but a longer lasting battery would be better. I was also a bit puzzled why PDA's come with 2.5mm audio jacks. Most mp3 players and all of the good headsets and ear buds have 3.5mm jacks.If you need to have your calendar, contacts, phone, and email with you this is a very useful device to have. When you add the GPS on top of all of that it becomes a must-have device.