Xperia S for 27k is the best option right now.
And if One S is available for 28.5k(as stated above) then you can buy that as well.
XE is good too.But Xperia S and One S are better.
I think you are confused with HTC One S C2 and HTC One S. The imported HTC One S is with new snapdragon krait 1.5Ghz dual core processor which is even better than quadcore tegra3 and quadcore exynos in some benchmarks. HTC One S C2 is just a normal dual core phone with old snapdragon scorpion clocked to 1.7Ghz which is also found in old sensation and sony xperia s.
I think you are confused with HTC One S C2 and HTC One S. The imported HTC One S is with new snapdragon krait 1.5Ghz dual core processor which is even better than quadcore tegra3 and quadcore exynos in some benchmarks. HTC One S C2 is just a normal dual core phone with old snapdragon scorpion clocked to 1.7Ghz which is also found in old sensation and sony xperia s.