42 #5 is my favorite, but I really like 8 #12, but 8#12 is played more often and 42#5 is not hackneyed due perhaps to its higher difficulty.
From a college professor (my teacher), most of those who audition play pieces that are too hard for them or that they are just not ready for or aren't well-seasoned. She has judged many times and what is most important is playing very well, technically, musically, and artistically, and so you shouldn't play what you think would be a more impressive piece, but think perhaps about playing a less impressive piece at a higher level.
Not to say that you can't, but just saying that it is a very common issue with students who apply to universities and competitions that really puts them down.
Good luck.