I don't if any of them are ideal, but it sounds like people are trying to tell you which one is a best fit for what your company does. They may be right, but I guess I would have thought no one would certify you to the "wrong" standard, because what you have available for them to audit would not fit with their audit checklist. So I think a better first question might be "Which ISO standard(s) can my company get certified to?" If there is more than one, then you can start looking for "ideal."
First quality principle: "Ideal" is in the eye of the beholder. The standard that might bring the most operational improvement to your company might not be the standard that your customers most revere. You should give some thought to exactly what it is you want to get out of certification, other than a certificate suitable for framing.