I know the answers vary depending on the mare you are looking to breed, but who are some of your favorite CURRENT sires (as in standing at stud currently) in terms of conformation (particularly as it affects durability) and their record of passing on their good phenotypes to their foals, improving upon the mares they are bred to, etc.? What are their best traits and what types do they cross well with?
Also, are there any on line resources that discuss these traits of particular stallions that I’m missing?