OK, to end the shit fight, let me say I've purchased my lights, and am not currently soliciting more suggestions. Not that I know very much at all. It's just that at this point I got what I got, and have not the dough to buy more.
So this is what I've learned about CFLs...
CFLs in the 23-42 watt range are more efficient that the larger lights in terms of l/w. But it is a fact that two 20 watt lights will not penetrate as deep as one 40 watter. So, is effeciency or penetration more important? If you can surround your plants with light, then the small lights may work better. If your light mounting options are limitted, then a smaller number of stronger lights may work better. Bottom line is that a shotgun works great when fighting zombies at close range, but a rifle is better for killing larger monsters at a distance.
BTW, the most efficiant CFLs I found are 4-pin 42 watters which yield 80+ l/w. The problem is that you need a ballest for each light, making them not very cost effective. that makes them almost twice as efficient as some of the 105 bulbs.