USAC vs ISA

<p>I am looking to do a study abroad program in Costa Rica this summer. My top two choices, though I'm open to suggestions, are ISA (International</a> Studies Abroad) and USAC (University</a> Studies Abroad Consortium? USAC). There is a noticeable but not dramatic difference in cost between the programs. My question is which company is more reputable and trustworthy? Is ISA worth a few hundred more than USAC? Have any of you gone on a trip with either? Thank you!</p>