In the room where I do my piecing and cutting, I have: the ceiling light, a light directly over the ironing board, a light in the corner of the room, a light over the sewing machine, and another light in that corner. They are all CFL's with daylight color...and I could still use some more! I guess these "old eyes" are hollering too! And the room is not that big...I think 10X10 or 10X12...

Hummmmmmmmmmm and I'd prefer florescent tubes

I have a basement sewing room , and really like my flourescant lighting. If you place the fixture in the center of the space , you will get some shadowing , as the angle of the light can't travel through your body. Lighting around the perimeter will give better results as far as shadows. I found LED's to be much more irritating in prolonged use.

Get daylight/full spectrum bulbs, and they can be used in the longer fixture (usually for fluorescents).

This is interesting. I have florescent lights in my basement, but have never heard of the shadow thingy!. I like my lighting.

You won;t have the shadow thingy ... if you have enough to let the light spread overlap from one to the other..
So you must have enough!! :)

Regarding the "daylight" bulbs.... I recently purchased 2 CFLs and 2 reflector lamp shades from Home Depot. This was based on Holly Knott's recommendations for lighting your quilts for photography. The CFLs are rated at 5000k and have the absolute best light for getting true colors. I LOVE these bulbs. They take half a minute to "warm up", which originally annoyed me, but they're so good I'm willing to wait. I've since repurposed them and have them over my work area next to my sewing machine. I prefer them over the 4' tube fluorescent bulbs in my kitchen, which admittedly are most likely not the right "temperature".

In a nutshell, I'd recommend CFLs rated at 5000k.

I have the 4' fluorescent bulbs, no shadows and great light. I put them in as replacement for track lighting that produced a lot of heat, shadows, and burnouts.