Much as I would like to have an N900, my N810W does enough for me now. If I need to connect outside of wifi range, I can connect to my cell phone by bluetooth and browse the web all I like for the monthly unlimited web access provided by my cell carrier. This way, I am free to upgrade my telephone if I need to without losing the N810W capability, and when my area finally upgrades to 4G/WiMax my N810W will be ready for that, too. The N900 is good for people who don't already have such a tablet and don't foresee problems coming from being locked into one type of cell phone, the one in the unit. I like being modular. Plus, the N900 does not have the WiMax capability of the N810W. For me, that's like being offered high end laptop that does not have a BluRay drive. I would not buy it.