3 similar but different lights
Size (largest to smallest)
Pacific, Keylux, Fenix
Brightness
Pacific and Fenix tie - The Pacific hotspot is smaller and brighter, the Fenix hotspot is larger and also has a larger and brighter sidespill
Quality
The Keylux N cell with the AAA battery tube is a precision jewel. The Fenix and Pacific tie IMHO
Runtime (Longest to shortest)
Pacific. Keylux, Fenix
Which to pick?
If you can find a Keylux (and want to pay the price it is a light you may cherish - but may also wish to safeguard and protect by not carrying)
If you want a light to carry get the Fenix or Pacific. If you want the best throw and runtime get the Pacific. If you want the smallest form factor and don't mind the shorter runtime get the Fenix
But really - you know you want them all
Anch