I have mixed feelings about it. The light on the 200 lumen version is a bit whiter than the 150 lumen version (slightly more yellowish). The low setting seems less bright than the 150 lumen version, but the high is definitely brighter, but not that much (maybe 10%, maybe 20% at most). The hotspot on the 150 lumen is smaller, so it's more focused. The 200 lumen version's hotspot is larger and looks more like a large circle from about 20 feet onto a white wall. The flood on both is about the same. If you want to spotlight something, then get the 150 lumen version, but if you want to light up a larger area, then get the 200 lumen verison. The runtime is equal on both - 1 hour on high, 4 hours on low. The 150 lumen version uses a CREE XP-E LED and the 200 lumen version uses a CREE XP-G LED. Also, the 200 lumen version does not have clean lines for both the hotspot and fill. There isn't distinct circles of brighter and brighter light as you get to the hotspot (like my Fexix LD20). It's uneven, so if that annoys you, then don't get the 200 lumen version.
What else do you want to know? I've never done a review of a flashlight before (first time).