The Luvdbaby has compartments and mesh pockets spread throughout the carrier- under the cockpit, on the backpack, at either side of the child seat and on the hip belts. This means you can bring and access little things like your keys and camera without having to put them in the main storage compart...
The product is relatively new to the market. It does not come with a manual and there are no online materials/tutorials to help you set it up. You'd have to figure out everything by yourself or read through Amazon Q&As and reviews.
The Parade has padded shoulder straps and hip belts that can be modified for an ergonomic fit for all body sizes. This ensures even weight distribution for parents and a comfortable ride for the children.
The Clevr Baby doesn't have the same ease of adjustability compared to the more expensive carriers. Fortunately, they won't matter that much if you'll only be on the trail for short stretches of time. It's still a nice, budget option for the occasional short hikes.