I'm working on a little web show that uses white screen. We've evolved as a show and I've purchased and rigged a faster and better lighting setup each time we use the screen.

I'm at the point now where i have a perfect white key but a horrible subject key (in my opinion).

The white screen is lit by florescent lights.
Could I save a few bucks and use tungsten lights or should I wait and use florescent ones when I can afford them?

I see the tungsten as obviously cheaper and possibly better for more varied situations but I'm concerned they will mess with the keying of my white screen.

Does it come down to a 5600k vs 3200k? Should I try and

Thanks everyone.