I chose to skip the Note 2, although most of my family had one I looked at it and decided to stick with the S2 at that time ...
So I went from S2 to S4 and am very happy with the increased performance and flexibility ... and if you liked the camera on the S2, it is EVEN better on the S4. Faster, sharper, bigger, and with many more special functions and effects.
I imagine the Note 3 will probably be a step up ... but as you say, getting an old device will give you 90% of the performance for 50% of the price!!
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