I just bought a cheap aluminum hardtail frame for $30.00. As far as I can tell its pretty solid, weighs about 3.5 lbs the welds look ok . I believe its a chinese mosso.. My only concern is the lack of a beefed up gusset at the head tube down tube junction. Is there alot of failure in this area with frames that are not reinforced ? I have seen some high dollar frames ,like niner ,without the extra metal there so whats the deal?