I tested all three Olight Ark Pro options side-by-side to see if the most expensive one is actually the best buy: the Ark Pro Lite ($80), Ark Pro ($100), and Ark Pro Ultra ($130). I start with what you get in the box (they all include the same USB-A magnetic charging cable), then get into the real differences—like the Ultra’s noticeably nicer packaging and the jump in materials from standard aluminum alloy on the Lite/Pro to Olight’s “O-Aluminum” on the Ultra. From there, I compare size and weight for everyday carry (3.70 oz Lite vs 4.05 oz Pro vs 4.23 oz Ultra) and break down the lighting modes and controls. The Lite gives you white + UV + red, while the Pro and Ultra add more utility with UV, floodlight, spotlight, and a green laser. The Ultra also gets the exclusive “Ark Beat” LED status indicator that changes color based on usage time (like turning blue after 64 hours). Finally, I run a real outdoor brightness battle through low/medium/high and turbo. The Lite is solid for its size, the Pro jumps way brighter on turbo, and the Ultra is the brightest of the three. My verdict: Lite is the lightweight budget EDC pick, the Ark Pro is the sweet spot for features and performance, and the Ultra is for anyone who wants the biggest, brightest, most durable option.