I have not seen the new arms by Monaco, but I have seen the Source Mfg arms and they are really stout. You may want to go to this site and look through the info there. The page I linked to is a finite analysis of the Original, the Source Mfg, and the Competitor arms. The only competitor I am aware of is the new Monaco arm.
I do understand that Monaco LLC is displaying and selling these new arms at the larger rallies. I will see if I can get a picture of it to post or e-mail to you.
From what I hear, they are only warrantying the new arms for 3 years.