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I am in a little bit of fix. Recently I had been interview by a company "A", and received a job offer from them, which I formally accepted by signing. As with desperate candidates, I had applied to other positions too, before being interviewed at company A. My dilemma came after I got a call for an interview from company 'B', which is kind of better in terms of brand. I also like the job description.
Personally I feel that it is ethically not correct, or unprofessional to get an interview at the other company. So, I have already informed company 'B' that I have an offer from company 'A'. However they are still interested in interviewing me. I am also not being greedy, as I am more interested in job description with salary being almost equal.
So what do you suggest in this regard?