Hi ,
i have done electronics and communication engineering and have a one year work ex. GMAT score is 590 and IELTS 8. I have got acceptance in oth University of dallas and universityof massachettes, boston. i know that niether my schools are great nor my score. giving GMAT again is not an option due some personal reasons. Kindly help me out as to what to choose.

If you just want some international experience I'm sure either would be fine. But if you're planning on looking for a job in the US after graduation, neither will have great career support.

Personally I think Boston is a much more interesting place than Dallas.

I agree with that. Some other suggestions: http://business-schools.findthebest.com/compare/24-42-50-54-90-262-277-334-365-396/Elon-University-Love-NC-vs-Miami-University-Farmer-OH-vs-University-of-Michigan-Dearborn-MI-vs-Rollins-College-Crummer-vs-University-at-Albany-SUNY-NY-vs-DePaul-University-Kellstadt-IL-vs-Ohio-University-vs-Clemson-University-SC-vs-University-of-Michigan-Flint-MI-vs-University-of-the-Pacific-Eberhardt-CA