When purchasing a good rucksack, you must consider your back and shoulders – they will despise you IMMEDIATELY if you choose a less-than-ideal option. This is one area, if you're planning an extended trip, especially into the wilderness, that you DO NOT want to skimp on. Don't settle for the basic $50-100 pack, unless you travel light, or for very short trips. Because, let me tell you, I did this once. My first extended European trip started with a crappy, cheap backpack, much too small, and much to my dismay, a totally wrong build for the usage I was putting it to. I ended up ditching it the first day in Barcelona and buying an overpriced backpack. Months later, I found a solid rucksack, and even then, it was too small and too hard on my back.
But there is hope, my friend! There is! Read on and I'll tell you more about my experience with Lowe Alpine...