I must admit, for me, the S2, feels like a better phone all round.
Not big fan of the samsung interface, however, it's a lot smoother and doesn't judder as much as the nexus.
When you have live wallpapers, the phone is rather un-responsive and slow on the nexus, which is rather frustrating.
It's a real pleasure when I use my bro's iPhone or use my iPad. Makes me realise how silly I was in thinking I could get used to Android.
Personal preference disclaimer - these are my thoughts only, not enforcing my views on anyone, not being pushy like DK on the iPad 3 vs iPad 2........
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