Personally I do not recommend any backpack vacuums. You may be young now but you wont always be! A backpack vacuum puts an enormous strain on both your back and your neck, so matter how light they might be. When I see photos of people using backpack vacuums, they are always, ALWAYS bent over forward, in order to carry the vacuum. This is NOT good for your neck or neck!!!! If you use one of these, you will pay for it in your future, trust me. You will end up with terrible back and neck pain and even may need surgery to fix it. Nothing is worth going through that! Find a good vacuum that is lightweight, easy to maneuver and gets the job done well. Backpack vacuums are nonsense if you care about your future.
I worked for many years on an orthopedic unit in a major hospital. We dealt with patients who had performed many "menial" jobs for years. And they paid for it most dearly, with arthritis, joint pain, back and neck pain, etc. Well, now I am one of those people. I clean houses now and I am 68 years old! My health is good and I want to keep it that way. NO backpack vacuums for me. I vastly prefer my Sharks with the super bright headlights. The vacuum head is detachable, so I can use that bright light to see what is truly there. This saves me a lot of time and helps me do a much better job. If I used an ordinary vacuum, I would not have that bright light which helps me so much. My Sharks weigh under 10 lbs. Easy to carry and easy to maneuver into tight spaces. The attachments help me, too. One is a super long wand thingie that reaches into tight, small spaces - especially in bathrooms.There are other wand type vacuums out there, and only you can decide which type will work for you best.