luggage advice -- traditional or duffle

<p>I checked out Mother Lode as well as high sierra and eagle creek. Only the last one has no wheels which is a requirement for us. S is going for a long trip overseas, and we need all the weight we can get. The wheels do add extra weight. Is eagle creek x-large duffle a reliable deal? A friend of S has a LLBean duffel but when I checked their website it seems that all of their luggage has wheels. S is the first in the family to travel on such a long trip so I need all of your advice and experience.</p>