dolfan I can answer just about any question you have. I own a hardwood buisness with 5 crews and growing. I also do inspections for many manufactures as well. The best reference period is the N.W.F.A. (national wood fooring association) or NOFMA.org
I hate to disagree with some here but oak is the most widely used because it is stable and durable and the cost yet really in hardness it is about halfway down on the list.
BAMBOO has come a long way but to say it is a very hard wood is incorrect. It is a Hard grass

Sarcastic but the problems bamboo has had is it scratches easy, they have done better but it still scratches. It is priced well and if maintained well is a good floor just be sure you know what ot expect. Brazillian cherry is my favorite for many reasons , it is the second hardest wood in the world, Brazillian walnut (lapacho, epay) is the hardest.
Aluminum oxide is the second hardest substance that can be put in a finish in the world. Many products hold many different finish warranties 15 year, 25 year, 50 year And they are all basically the same. 7-9 coats of acrilyic water based finish with aluminum oxide so dont be fooled by finish warranties.
Laminates are what they are, durable, stable but they surely are not wood. So if you like wood get wood. Solid traditional hardwood expands 17 percent engineered or floating floors expand 4 percent so based on the amount of moisture your area has this should be a thought. Many enginered floors now look just like solid flooring when installed and can be sanded just as many times.
I could look and see if any of my distributors deliver or have a branch in your area if so I would be glad to help ya.
Any questions beyond this just ask..
Avoid maple in any high moisture areas and if you have a concern about a brand I can help there as well.