Does it matter which certification body I choose?

No. But it's a good idea to make sure you're comfortable with the person performing your audits.

We recommend calling a few and talking with them prior to making a decision.

If they have a website, check out any endorsements or client feedback. Call some of their clients to see how they feel.

Once you've done your due dilligence you'll be able to confidently make a decision that will work for YOU.