Well, my LG Optimus 7 arrived today and overall I'm very impressed. I think I perhaps am easily impressed after WinMo 6.5, but nevertheless, it's a very nice device that I have hardly stopped playing with all evening. I think the highlights are the overall build quality of the device and the snappiness of the OS, also the web browser is really fast and the keyboard is easy to use.
Now I know most people will be interested in how it syncs stuff. With music, it was a bit of a pain. I had to drag and drop individual albums onto the device, but after that the wireless sync was pretty cool and fast. Obviously Zune doesn't play flac or ape files, so I haven't been able to put them on my phone yet. I am also failing horribly when it comes to syncing my calendar from Outlook 2010 to the phone. I heard you could sync your Outlook calendar with both Live.com and Google, but whilst both will import my calendar, neither seems willing to send the calendar out the phone, they send their own but seem to treat my Outlook calendar as a secondary concern. At this point this is probably the thing I'd most like to get sorted.
I hope anyone thinking of buying a Windows Phone finds that vaguely helpful, if anyone has any questions I'll try and answer them. So far my overall impression of the device is positive.