I used Trek for my summer vacation. It worked OK, it was a life saver in the planning phase. and it ended up being my go to place for booking pdfs and to check departure times

It had a lot of functionality, and I had little time to explore them.

my biggest annoyance was that the packing list couldn't be exported, but that has since been fixed

i think i will use it next time too, I don't see a reason for me to test alternatives