It's hard to find information on the current RO, because we're basically playing a black sheep episode compared to other officials. Other official server is playing 14.3 or later(Morroc reconstruction and 3rd class skill add on, job level expansion to 60), and we're playing 14.2. So a lot of guides are replaced since it's outdated for their servers. Your best bet is to find 150s on ROPD, befriend and talk to the 150s, and find your own opinion of it. I had to consult many mechs before me until I settled on a solid plan that suits my style.
Giant Axe and Hurricane Fury have high natural ASPD and can be enchanted for, so that's an option you can consider as opposed to defaulting to Pile Bunker. Bellum Guillotine has best raw damage on AxeBoomerang,
Sea Captain Hat[1] is a great hat exclusively for Axe mech with axe tornado and axe mastery aide. Ghost Ship Anchor Earrings are accessories that reduct the main 4 elements 5% exclusively for Mechs. Downside is that they are cash shop items, not cheap.
further research material:
http://www.inven.co.kr/board/powerbbs.php?name=subject&keyword=%B9%CC%C4%C9%B4%D0&x=22&y=8&come_idx=1957&iskin=&mskin=&p=1&query=list&my=&category=&sort=PID&orderby=&sterm=
