It depends what do you want with your device. if you need MfE, access to office docs, notes app and such, lumia will make your day out of the box. But any other approach to task switching outside Harmattan is utter crap at the moment... buttons... in touch screen device... come on!

And don't start telling me "ther is an app for that". Good luck finding the right apps from the huge pile of sh*t offered from marketplaces without long trial and error experiments... (I can has a rss reader - ovi store...)

e: this opinion is with lumia800 (latest battery firmware updates) and n950 beta pr 1.2