Coming from a palm centro I have had to give up a lot of the basic functions like; syncing categorys; notes for tasks; searching PIM data and one handed operation of the media player. had my n810 touch screen still been in action I wouldn't have made the switch.

But I am dependant on RDP SSH tunnel, something Droid cant do yet. another push away from Droid was the inadequate search of PIM data like notes. to my surprise the n900 was worse! (I was expecting simbian function as the base) and despite all the cool hardware on the HTC my past habits have helped made Microsoft the monopoly it is and cant bring my self pay my hard earned cash to alienate my self any further. (not to mention I have the same relationship with Google except they don't charge me cash yet.)

All in all I think the open nature of the n900 has made it my device of choice and I believe its shortfalls will be made up through community participation. (but with out full PIM function, syncing and search, the phone will become dead quick - so i am on tenter hooks at the moment.)