best artificial light system vs sunlight

[vyltan]

Well i read 5 pages worth of threads about T5, HID, blue, red, cool, warm lights with their pros and cons. I currently have a monoculture of phals growing under modified HPS 440W (added blue light) system with light intensity ranging from 1300 to 500 foot-candles depending on plant position under the system. Everything is spiking constantly without any timing modification (12hrs year round).

I have no other system to compare of course but I feel vegetative growth is somewhat slower but my main complaint is that flower size is about 10 to 20% smaller than first blooming when bought (grown under natural light by producer). I fertilize with MSU for demineralized water (wich i use) at 1/8 teaspoon per gallon twice a week with monthly flushing to avoid salt buildup. Have great root systems.

So my question is: is there an absolute best artificial light system that can reproduce natural daylight and really give the same results flower size-wise?

[neb]

I don't know if it is the best solution but i have seen a grow room with two 600watt Metal Halide lights and one 400watt sodium. They had many different types of plants and when I saw it there were catt., phal., vanda, and onc. all in spike and they all looked great.