difference in render time between using a Vray Plane light & a Vray sphere light??

[3DMK]

Is there much difference in render time between using a Vray Plane light & a Vray sphere light??
[they both have same settings & a similar size.]

My first guess is that the sphere light would be slower??
I have a dusk/night shot that has approx 70 lights so I guess it would add up over that many.

I would have tested myself although work is ridiculously busy leaving no time to spare.

Thanks

[vlado]

I don't think there would be much of a difference, they do very similar things.

Best regards,
Vlado