After two days with my Nokia 630 I must say I really like the device despite its rather low resolution (854*480px which I hardly notice) as well as Windows Phone as an OS. It's fast, responsive and fancy - that could however change if I install more apps.
Surprisingly synchronization with Google (mails, contacts, calendar) works flawlessly out of the box (no app required) which I didn't expect after it was reported that Google had pulled the plug for the free Exchange support of GMail. Also Nokia's map application called "Here" is pretty neat. It comes with high quality maps provided by the subsidiary fomerly known as Navteq, is very responsive despite it is vector-based and allows stepless zooming. Actually I started hating Google Maps for having become so bloated that it takes ages to start up and to perform a search. Not to mention Google's bad map quality in many parts of the world including Eastern Europe where I regularly see street names from the communist era and missing roads despite the areas in question are already available on StreetView so Google should be able to gather actual data.
However what I dislike about WP is the still very limited choice of apps which on top are rarely free of charge. E.g. I could neither find a good FTP nor a SIP client that would be free of charge and even the paid ones have bad user ratings. But as my Windows Phone will mainly serve for voice (currently I don't even have mobile data enabled), I can live without that stuff, though it would be nice to have redundancy for the functions of my Android handset.
By the way, today I received an email from Nokia infoming me of a new platform where they will make beta versions of new apps available:
http://lumiabetaapps.uservoice.com/