Your experiences with the last 4 Mule Teams?

[Strong-Dog]

At my disposal, I have MTs 17-20 with handle scales (finally). They are ready to be carried and used, for anything and everything. My question goes out to the people that have vast experience with the past 4 MTs. What are each one's strength's and weaknesses (relative to each other)? What role would each Mule Team excel in? This will also help me determine if I should swap out contoured Halpern Ti scales for flatter ones. Thanks guys.