I was planning to buy the Lumia 920 since the first news about it came to the light, as it will pack an evolved version of my favorite mobile OS and a top-notch hardware.
But 920 took so long to be available, that suddenly Nexus 4 happened, packing a 2x most powerful CPU, 2x more RAM and the most important to me: a way-way better GPU. And for almost the half of the price.
If WP8 had evolved as much as I was expecting (free selection of color accents and background, set any sound I want as SMS tone, a custom ringtone directly from my phone, a blacklist for income calls and sms, and other simple things well voted on own MS suggestion box for over a year), I will probably buy a 920 even basically paying double for half compared to Nexus 4.
Don't get me wrong, I am a huge MS fan and I have my WP7 since Nov'10, but I never felt that MS was listening to our feedbacks and now I am sure of this as almost all good and well voted suggestions on that suggestion box was simply ignored. In 10 months with a Motorola Xoom, I got two major updates (HoneyComb (almost unusable) to Ice Cream Sandwich (more close to a finished OS), and then to JellyBean (a truly good piece of software) that added tons of new features and system improvements requested by the users, and in 2 years with my WP7, only Mango, more than a year ago, added new features, mostly basic ones that were available on iOS and Android already.
This time I will pass the WP and will stick to Nexus 4, but hoping that MS will finally start to heard their user base and tailor the OS according to it, so I can come back.