Smooth as hell... average battery life..
A complete smooth surface with 4 touch buttons... this is the best thing I like !
and thus I would never consider those Galaxy model. (expect Nexus)
The second thing I would miss is the location of the build-in speaker..
speaker on the edge is much much better than on the back !
I would only replace my 2X with a future phone..
which have at least Quad Cores CPU, 4"+ 720p screen and with LTE !!
Before such a device appear, the 2X would still my favorite phone !