I use a weird sized tent... it's 32"x60"x80" so five feet wide, 2 and 2/3rds feet deep and six and a half feet tall. It fits the space I had pretty exactly, but having wide-but-shallow made for some lighting creativity. The HLG 225's are closer to 'single point source' lights (really tight quantum boards with reflectors) so they sort of act more like traditional bulbs...but they're really best for 2.5x2.5' or 3x3'. I could have gotten away with 2 of them, but 3 gives me more firepower than needed, and I can dim them in different combinations depending on what I have under them at a given time.
So, given that, I'm not in a hurry to move on from them. Also, I like the build and form factor. Here's what they look like hung in the space (note that the fan setup has changed and I only use boxes in early veg when I'm balancing out plants that are shorter than others).
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