Colombia is cheaper, arguably better run, significantly safer, and (to the extent that it matters) speaks Spanish similar to "the King's English" instead of something more dialectal.

Big fan of Colombia. They're in the middle of a real boom.

Colombia

don't worry I made that mistake and one engineer was trying to get my address to send me "the shirt"

Arguably the big one is the NAFTA TN Visa, which makes it easy to get Mexican help into the US. No H1B needed.

Lotta business, esp. manufacturing, in Mexico as well; they've recently overtaken China and Canada as the US' number one trading partner.