Has any evidence been uncovered which might lend support to loop quantum gravity? I know that string theory is all the rage but the mathematical complexity and prediction of additional exotic particles and forces give me doubts. Does anyone personally have a preference between the two theories?

Even the biggest guns of string theory say the mathematics of the theory will not be figured out for another 50 years. I would much prefer to see a dramatic, and shorter-term advance, the kind of which has not been seen, as far as I know, since the Electroweak breakthrough of the 1970s- over 30 years ago. If loop theory can do it sooner than string theory, that would suit me fine.

Given the set-up, you knocked it down. Would rep, but need to spread it around. And BTW... I'm on to your question asking, I know where you're pulling these from