I have a ctr500 from Cradlepoint. (http://www.cradlepoint.com/products/ctr500-mobile-broadband-router http://www.cradlepoint.com/products/ctr500-mobile-broadban

I have a ctr500 from Cradlepoint. (http://www.cradlepoint.com/products/ctr500-mobile-broadband-router http://www.cradlepoint.com/products/ctr500-mobile-broadband-...) + a sprint express slot EVDO card for about $68/month. It works really well and is very small. The cool thing about this is it has a NIC built in so you can light up a network if you really need to. Of course the hardware subsidy from the phone companies is pretty attractive. The cradlepoint was about 200 bucks and the card was probably 300 when I got it about a year ago.