definitely iphone 5. the one thing thats crucially missing (for me) is jailbreak for ios 6. i used the zephyr tweak constantly on my iphone 4 and hate double tapping the home button to multi-task.
if ios6 jailbreak ever comes (its been a long time and still no real progress), iphone 5 basically becomes the best of both worlds again. way better and polished apps + customizability.
if ios6 jailbreak ever comes (its been a long time and still no real progress), iphone 5 basically becomes the best of both worlds again. way better and polished apps + customizability.