Compatible if you plan to crimp existing fittings made by Parker, Gates, Aeroquip. 

Compatible if you plan to use reusable hose fittings.  

Hose ID's are odd: 

3/16", 5/16", 13/32, etc.

Fitting choice as well as assembly procedures can be more complex.

Can be used with 3 Piece fittings.

Minimal options on 1 piece styles.

Compatible if using Weatherhead Crimpers

Compatible if using 2-Piece European Hose Ends

Hose ID's are more conventional:

1/4", 3/8", 1/2", 3/4" & 1"

Multiple options for hose couplings

Easy fabrication