Well put el guarrito
I didnt really mean to have a major dig at onza. Just in my experience i have seen a few break and have stayed away from them. I do agree they make some nice beginner bikes that will get people out riding, and thats a good thing.
I think any bike made from U6 alloy (Koxx/echo family) will be a good longer lasting bike. Dont know why U6 is better but i have seen old levelbosses and echo pures last through ages of really hard abuse. Not being biased or anything, but thats just what i have seen.