Originally Posted by
Tomm
Nexus 4 definetly, assuming you get it from the play store. I've got a Nexus 4 and I've used the S3 and personally I think the Nexus 4 is a much nicer phone. Spec wise the Nexus 4 slightly edges forward over the S3 and the lack of removable storage is not really a issue. If you do need to store loads of data for some reason you can actually plug a USB pen drive into it. Not to mention you can buy the Nexus 4 off contact and just get a sim only plan or something like a giffgaff sim and save tons of money and not be tied into any lengthy contracts.
Also by getting the Nexus line of phones you're pretty much guaranteed to be getting frequent Android updates for a much longer time compared to the S3. Not sure if it matters to you but also since it is a nexus phone you can unlock the bootloader in a few seconds and Google normally provide all of the relevent source code in the AOSP to enable developers to work on the phone.
To me anyway it seems a no brainer to get the Nexus 4 considering how cheap it is.