So, we want bright and good color. Whether that's for watching sports with some lights on or some daylight coming in, or just a good amount of brightness while watching your favorite sitcom, some high quality HDTV content, news, or your favorite vampire show, doesn't really matter.
The Vivitek H5080 does extremely well. With our "quick-cal" the H5080 measured in at 1307 lumens, as previously noted. So, your choices when you need bright, is go with the default, which is very cool - blue, in color temp, go the middle route with improved grayscale balance, for a small drop in lumens, or not even bother worrying about it. That would be to just go with "best mode" which isn't that much less bright than the other two choices.
The Vivitek H5080, definitely has the lumens to fill larger screens. While you don't get a big extra boost in lumens, when switching to "brightest mode", it still is a lot brighter than most.