IIRC Rip uses
https://wiki.project1999.com/Meljeldin,_Bane_of_Giants which is supposed to be the best parsing weapon for rangers in this era.
FWIW - The de facto casual setup is Swiftblade of Zek mainhand and Swiftwind offhand. Going to be hard pressed to find a tradeable 2hander that parses better than those two together (AT LEVEL 60).
So a lot of this depends on what haste you are using, what haste spell you have available, and what weapons are available to you.
Ripqozko has pretty great gear and a lot of experience, so his setup is definitely something to aspire to.