I have a N810 and a N82 (="N95 in candy bar"). While the functionality of the two overlap, they complement each other really well:

N82: Phone, 2G/EDGE, 3G/HDSPA, Calendar & Contacts, FM radio, PERFECT GPS and Maps (with Voice routing free for 90? days), Nokia Sports Tracker, J2ME GMail, a webbrowser that is quite ok for pressing needs on the go (quickly download a weather radar image) and some google reader-based surfing

N810: Internet everywhere in perfection, touchscreen, keyboard, great OS, ever expanding playground. Media Player.

So while the N82 covers the "serious needs" on-the-go, the N810 is for "enjoyment and fun" while being settled a bit more.