It depends on what sort of things you’ll be carrying. The backpacks are very good for carrying small or more or less flat things. The laptop sleeves are very well padded and have a strap to keep electronics from sliding around. There are a decent variety of pocket sizes. The middle section unzips enough to let it open completely flat and the elastic braces make it great for carrying something like a change of clothes. The form factor keeps weight close to your back, so it doesn’t feel as heavy.
What it’s not great for is bulky items like shoes, a large Nalgene, or Tupperware. I have found it great for carrying around laptops and books in addition to standard purse stuff. I found it not-great for things like a day-pack at a convention or carry-on for a long trip. For those things I use a one-big-sack style backpack.