For example, on my Dahua, responding to big changes in exposure settings, or switching between day and night mode, takes about 5 seconds when a light goes on or off, while on the Vivoteks it's about a second. That extra 4 seconds is a long time when something's going on that you want to see. Likewise, you can't completely turn of the IR on this cam. I'm assuming these things will be fixed as the software matures, but you never know.