If you're purchasing a rucksack from a hiking company for its looks you've missed the point
Perfect size for backpacking. You need anymore than 30 liters you are taking too much. Lighter is quicker, safer and you have less to lose. I speak with experience. Took 20kg clothes to Oz on ever first trip. Never wore 75% of clothes I carried. Socks, underwear, haha. No more. Just my advice.