cowboylife:
Wow, definitely 10000% better buuuuut, ya kinda sorta cheated, 
you used your 40d & a different lens (your 50mm vs. the 100mm originally) for the two newest shots. I was sort of working toward something on the 5d not being setup for an indoor shot with the lighting you are using. I would try that same shot with the 5d & 100mm using the custom WB just to make double sure. 
BTW, I would think you don't need to drag out the grey card since the tent is, well, white. You should be able to use it as your WB reference shot.
Plus much as I love my 40d, ya gotta love those FF shots.
BTW, I am using those trumpet shaped CFL daylight bulbs which are 30w native but supposed to be something like 100w equiv. I scored them at Walmart of all places. I have a couple more typical cylinder shape CFL daylights with the same wattage and the trumpets do seem to give off more light. Supposedly that is because the coils are not on top of each other so more light gets to the subject. I still think that is a bunch a you-know-what but heck they were only $6 or $8/ea. when i found them last year. At the time there were selling for up to $65/ea on eBay. I swear if you tag something as being a photography accessory the price increases exponentially. Worst part is people pay it...Makes me wonder is anyone has looked at the prices for foam core stuff at a photography shop anywhere...a part of me bets it will be $10/sheet. 
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