Choosing a maple for shade
I'm considering a maple for a shade tree, probably a variety of acer Rubrum. Many cultivars are bred to be small, whereas I actually want a large tree for significant shade. In addition to wanting a larger variety, I'd like to avoid the notorious shallow root systems of red maples (I've heard that some cultivars minimize this issue).
What suggestions do you guys have? I am considering other trees too, but maples grow faster than the others I want (I want an American Beech really, but I'm not sure I want to wait for it to provide shade). I'm open to any ideas you might have, so don't hesitate to suggest something other than a red maple if you feel it is warranted.
Thanks for your suggestions/advice!