A. The USA version is CNC machined from aluminum and made with the highest quality standards I’ve ever seen, and that quality costs money.
The Columbian version is less expensive, hand built using steel.
Both of these manufacturers consulted with me to build their versions and I fully believe that both versions will function identically, giving the same gains and be just as durable.
Our Pre-Release/Rebate Program (spring of 2014) will provide the proof needed to comprehensively answer this question.