desivoltiare suggested this, but I put off doing the post because, well, this is impossible! To make a true judgement, you would need to listen to/watch every single SRK song, then categorize them based on singer, than decide which singer over all across all his songs is the best. I’m not doing that, and you shouldn’t have to either. Limited to these songs in particular, which is your favorite playback singer among them? The best match for SRK?