Depends on what you need it for.
If you are ONLY blowing off a few clippings from a sidewalk, it's mostly overkill.
A hand held will do the job, not take up room in the truck/trailer, and be easier to handle overall.
That said, there are a bunch of things you can do with a backpack that can not be done with a hand held. I ran my first season with a hand held only. I didn't do any leaf jobs that year though. I hate lugging around my backpack, but when I need it, I'm glad I have it. Having the right tool for the job is the biggest advantage.