The skate that is the best is the one that your foot likes the most. Everyone's foot is different, so what fits you well will not necessarily fit the next person.
Every skate is specialized for a specific use.
You have to think about which type of skating you like the best or will be doing the most of and go with a skate that is made for that purpose. You need to have a wheel designed for the type of skating you intend to do. Softer wheels absorb more of the vibration from the road and will grip better, but they tend to wear away more quickly. 80a is about the middle of the hardness scale with a lower number indicating a softer wheel and a higher number a harder one. The higher the ABEC, the tighter the tolerances.