If you stay in Mumbai, do visit Alfa store in Andheri. They had the Xperia S dealer warranty for 23k. IMHO, S2 is a good phone but it feels kinda dated now. And Mali-400 GPU and Adreno 220 are on par in most of the tests. The only drawback with the XS is that there's a nonremovable battery.
Dealer warranty from "Alfa" in Mumbai covers Death on Arrival or any mfg. defects for 10 days(a friend returned a Gnex which was restarting abnormally). Most phones are built well and no problems occur for the 1st year, that way official warranty is not much of a concern for Gnex. If you still...
Sony confirms Xperia S yellow display problem | Expert Reviews
Xperia S is display is great only if(and a big if at that) you get a good piece.
I would rather go with the Maxx. IMHO, no point in spending 28-30k on any of these phones when you can get GNexus for 23-24k with dealer warranty...
It supports USB OTG. However, mounting array has not been natively included(i.e. keyboard, mice work but not USB drives) but we are away from external storage support by a single custom rom. :)
A very good device at that pricepoint.
Galaxy nexus has a 50$ price drop on play store.
Unlocked Galaxy Nexus HSPA+ price dropped to $349 off-contract | The Verge
With the JellyBean update and this price drop. Nexus is the way to go.