Hi Maria,
I just received my blue N8 yesterday from the French webshop and spent a few hours resetting and updating it first thing. 14 days cooling off period allowed.
Feels solidly built, well-designed and with loads of nice features - yes, calling works, too. Frankly, not all bugs, notably rebooting issues, are ironed out, but I remember a debacle with another famous phone recently. Nokia told me today that the next update will be primo January.
You are welcome to borrow it over a coffee/beer to see if you like it.
Of course, certain android HTCs, the N900 and the iPhone 4 are strong competitors. It's all about choosing :)
For me, the N8 will replace: GPS, prosumer reflex camera, bathroom radio, iPod Touch. That's a lot less to carry.