High Sierra Luggage Im Going To Travel To Europe Next Month For 5 To 6 Months. What Is The Best Luggage Bag For It?

Im going to travel to europe next month for 5 to 6 months. What is the best luggage bag for it? - high sierra luggage

I am looking for something like a duffel bag, safe security around the airport, something like Timberland Adventure Trekker 32 or 36 or the High Sierra 36