CFL Light Direction Question

Hey,

What would be the better arrangement for the twist style CFL bulbs?

Placing the bare bulb next to the plant sideways or if it is directed lengthwise toward the plant but in a clamp lamp reflector (like the metal bell shaped ones that come with cheap clamp lamps)?

Thanks

Im using CFLs also. Im not exacty sure what is best but ive heard people say that mounting it long ways is better. But i dont have any way to mount mine that way so i have mine hanging from with with a light socket on the end.