I went from 400W SE, 14K over my "temporary" holding tub to a 250W DE, 10K and I must say the growth and overall appearance is much better with the 250W DE. The color isnt quite as nice (no supplemental actinics) but my few SPS actually have some nice color and my lps are fat and swollen looking. Im going to water test my 400 this weekend and if my repairs are good, Im going to pick up another 250 DE setup, throw on some T5 actinics and still cut my lighting power consumption by 1/3.