WP7.5 User: Is WP8 worth it?

I got my Samsung Focus a year ago. At that time I wanted the UI even at the cost of Apps and hardware. Since then I've waited for WP8 expecting some 'real' new features. Now we have a new Kernel and many family and kids features. The UI will trickle down as WP7.8(which is already leaked as roms). So really what is to keep a disgruntled WP7 user from moving to a cheaper Nexus 4? (I have to buy unlocked) I had already decided on the Nexus 4 but Vlad's "This is my next post" is giving me second thoughts.

P.S. I know the 8X and 920 look better but a $300 premium is more than I can afford, if looks are the only advantage.