Unfortunately I do not know enough about each position or your background to recommend which position you should pursue, although I can discuss the impact it may have on an admissions team.
If you have a high volume of job changes on your resume, you may appear to lack commitment or be unfocused, and you will probably need to explain the reason for your changes and help the admissions committee to understand the motivation behind your decisions. It’s important in this situation to refrain from merely chronicling your resume.
You will want to explain the “WHY?” behind the “WHAT you did.” There is no right number of jobs, or right number of years at a job. Most important is to explain why each step is a logical one in your path to the MBA and longer term goals.
I hope this was of help.
Conrad and the Stacy Blackman
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MBA blogger, US News and Author, The MBA Application Roadmap