I was planning to use my Gregory Zulu 40L pack for my September Norte/Primitivo trip. It is too big for carrying on. Given the ongoing airline issues with lost luggage, I've decided to acquire a pack that I can carry on. I've Googled and searched on this forum and the options are overwhelming. I will be carrying my pack the entire trip, not forwarding. I am looking for recommendations and advice. I am flying KLM from Canada to Spain and Vueling Airlines within Spain. I would greatly appreciate responses from folks who have had recent experience since the carry-on rules seem to have changed or are at least being more stringently enforced this year. Thanks!