I have done a lot of beef (mainly tenderloins) using lump charcoal (mesquite or Royal Oak), and using white or red oak for wood. Been very pleased with the flavor of oak and beef. I did try Pecan at different times and I did not care for it.
Not sure if you can get the red oak elsewhere, but it is pretty common here in California. I think some call it coastal red oak. I even use it with kingsford or lump for direct grilling of beef or lamb and it works well.
Chris