Trees, Shrubs and Conifers: Fast growing shade tree to replace our 70' White Oak, 0 by Cajun2

Cajun2 wrote:
We lost our gorgeous and very large shade tree during Hurricane Ike last fall.
It broke our hearts, and now we're left with this nice stump.
We'd like to plant another tree in its place, but wonder if there's something that might grow quickly to provide shade before we retire in 15 years!!

Someone sent me seeds for Acer saccharinum (Silverleaf Maple), but after reading the comments about it I'm apprehensive to start it.
I dearly LOVE the A. palmatum but a) they're not tall enough for shade, and b) take longer to grow anyway.

We have many native oaks on our 5-1/2 acres, but not sure which grows the fastest - assuming we replace the White Oak with another oak.
We have only seen one other White Oak on the property anyway, and no saplings/seedlings.

Open to suggestions.