Sleddog,
Here are some pros and cons for the firefly.
Pros: It really works. Shine a flashlight into the scope for about a minute and the reticle will glow for about 30 minutes.
Cons: The middle of the reticle does not glow, only the heavier outer post.
The reticle is bushnells 3-2-1 low light reticle, so there are actually 2 different thickness post with the fine crosshair in the middle of the reticle. Once the charge has faded, the reticle is a normal black.