I've been studying, just for pleasure, but studying in the end, a lot about QFT and its prerrequisites reaching some not so bad understanding of the Standard Model. I know that I still have to fill a lot of gaps, but nevertheless, I am looking for some new topic to start reading (while I fill the gaps mentioned). I was giving a try to Supersymmetry (I've been looking at the youtube lectures of Susskind, which are incredibly clear and Im now trying to read the 3rd book of Weinberg which is much more difficult but also more precise) but now Im seeing in PF threads that LHC results are somewhat discouraging in terms of the potential of SUSY. In this context what do you recommend me to study now: SUSY, LQG, String, GUT or what? Why? Which theory is more: Likely to be true? Useful? Beautiful? etc. Thanks!