I don't really know what to go for next...
I could do with a little more RAM, more CPU power is nothing I really need right now, so maybe to replace my daily i9300 I'd go for :
- a i9305 : it lacks FM radio which I don't use and has LTE which is not really helping here, but it has 2b of RAM and at least I could also test my i9305 kernels myself and not have others take to dive for me
- a note II : but I find it too big...
The i930x is still a pretty fast phone !
If the S4 comes with 4Gb of RAM, then maye it could be an interesting upgrade for longer keeping, as with 4Gb it will have potential to last for quite a bit before getting left behind, RAM is more of a limitation than CPU/GPU power nowadays.
JP.