Oh, both of these are quite popular dramas, I have heard few good things about both of these dramas. But I have also heard that "Swallow the sun" wobbles a bit in the second half, I will see.

Yes, Midas is written by the same guy (he also wrote "IRIS",'All in" and "Jumong"). He has a distinctive style, I think, quite plot-driven.

Midas has Jang Hyuk and No Min Woo. :D These are two of my huge favourites.