About a year ago I switched from 2000 watts of HPS to 1000 watts of cobs. Today I downsized by getting rid of about 300 watts and 2 side by side RDWC trays. Even with the side lighting I am down under 700 watts and loving the move! I have a nice surplus, which allowed me to downsize. It is also allowing me to start more crosses and concentrate more on popping seeds and vegging new stuff.
Here's what it looks like today:
These are Mountain Temple in the back, Apollo 11 in the front, and Space Monkey against the wall.