I run a Gavita 1700e. Its no better than my 1000 Hortilux HID that Ive been using for over 20 years. I use the Gavita for veg, in a 4 x 4 area at 24 inches.
I use a 1000w/1700e from Seedlings - flowering. My seedlings never see less than 1000w HID. I grow big plants because of plant limits in an unfriendly state, in 20 gallon containers of Promix BX per plant. No less than 10g. 2-4 plants per light.
I also run DE Gavita 1150w.
Hortilux 1000w HOS is 1600umol.
Gavita 1700e is 1700umol.
Ushio SE 1000w HID is 2100umol, and will do a 5 x 5, but isnt as reliable as the Hortilux.