my thought is Kamal-Gowthami ... the pair has been the most natural amongst all .... do not want to talk about any news on their understanding beyond screen still i feel - though not many movies like SriDevi ... they stood awesome in the selected .... some memories for me were Devar magan (though for a little time), Kurudhi Punal, Nammavar, Aboorva Sahodarargal ...