I think he's looking for the hemispherical visability of the pak-lite.

As for the pak-lite itself, which evaluation said they weren't terribly bright? For what they are, for thier cost, I've found them to be acceptable. But I don't expect something that simply clips to the top of a 9V to be super brite.

As for their reliability, again, I find them to be acceptable for thier degree of skeletonization. Bare positive and negative terminals, on the same side of a cell and that close, is likely to have issues if you don't take steps to keep it dry.

For what it's worth. *shrugs*