If I may put in my 2c here: I run a small ofc and hence am tied to my phone almost 24/7. After recognizing the limitation of a mid price cell (I use the SE W810i-great cell device btw) I decided I needed some sort of PDA for times out of ofc..the Cingular 8525 (HTC Tytn) appeared to be an awesome device-which it definitely is. So I get it on Cingular's 30 day trial, and use it for a couple of wks..and it is definitely a great tool and useful for my needs..especially for using "real" internet access when away from the ofc. However, I finally realized that for the actual time I needed the extra features of the 8525-it just didn't justify having to carry (or lug) such a "beast" of a device. I much prefer the little W810i and what I need it for 90% of the time in my shirt or pants pocket. So I returned the 8525..bought a N800 and when I need the "extra" feature of using "real" internet..I just get online if I'm in a wireless environment..or tether to my cell if not. The N800 is limited in it's PIM, but I find using my W810i for calendar..remind me of tasks..and contacts is perfectly fine..and since it is with me all the time as opposed to the N800, I don't think I'd use a PIM function on the N800 anyway. Anybody else with similar experience? I think the N800 does what it does well and in my opinion a cellphone-even midrange priced ones-manage contacts and calendar functions in a satisfactory way.