The Focus is my current phone. With the Mango update, Windows Phone is an absolute joy to use. The OS is fluent, and well designed. It's super snappy, even though it's specs are considered low and I've further crippled it by adding an unsupported microSD card.

Most apps I've wanted are already on Windows Phone, so there's no issue there for me. The email client is fantastic and rather than force all email into one 'mail" app, you can link your inboxes at will to keep them separate if you so wish.

The Zune ecosystem that Windows Phone is tied into is very attractive to a music listener with Zune Pass as I can download any music on the go and it's a built-in service, putting it one step above other streaming services on Windows Phone.

My only complaint is the battery of the Focus is the weakest of the the Windows Phone bunch and it can drain very quickly. Some days I make it home with barely any battery to spare, although Windows Phone's battery saver feature has mitigated that somewhat.