I'm using the smaller versions, the TSL-2000, and TSW-2000. A condensed journal of my last grow under the TSL-2000 has been entered in the current Mars Hydro contest.
Here is an image of a plant growing under a Mars Hydro TSW-2000:
Granddaddy Purple Under Mars Hydro TSW-2000
The plant is over 100cm (40") wide and 90cm (36") tall.