I was looking at first aid supplies/kits, with an aim to making a small kit to carry day hiking.

I noticed that REI has some kits branded under their name, as well as refill supplies (some of which may be useful in a small kit) with their brand.

I know Adventure Medical has a good reputation for their kits, but some of the REI kits have pretty decent-looking load outs. Based on the idea of getting a small kit and modifying it as needed, some of theirs are attractive.

(Note: I haven't done a side by side comparison to determine which brand is a better base kit value or even if it's worthwhile money-wise to use a kit versus just assembling one in something like a Maxpedition F-1 pouch.)

The question is: How is the quality of their components?