I'm neither a teacher nor a professional, but please allow me to share my humble, silly opinions.
I think the former has more technical difficulties. However, amongst the two, the latter posted the biggest challenge technically and musically of making the piano really sounds so delicate, interesting, soft and sweet like the small bells...
If you are going for LTCL and you do want a Hungary Rhapsody or Concert/Paganini etude in your programme, it may be better for you to go for a "less" famous one (though I must admit that all of the Liszt's works in the syllabus are quite well-known!)