I "grew up" with BRCGS, since version 4 in fact so it "makes sense" to me. In most plants who aren't mature, the prescriptive nature of it, yet the willingness to accept a risk assessment is pragmatic.
BUT, I don't like the way it's audited. The standard owners have tried with the "audit this bit in the factory" sections of it. After you go through some other retailer or AIB style audits, the amount of time you spend at a desk with BRCGS is too long. It ends up being an audit of the competence of the technical team in recording stuff in policies not actually what's happening. And in fact, if you make sure that your systems are tip top, you are almost guaranteed an AA in my experience as I've not had an auditor yet who has either taken their blinkers off or spent long enough in a factory to get >5 non cons without some of them being system related.
I have limited experience with FSSC but kept looking for more standard content I'm not sure existed. For the site I was in, I ended up taking the FSSC requirements and BRCGS because while we weren't accredited to the latter, we were so culturally immature, I didn't feel what we'd assessed as minimum standards was enough. SQF seems a lot like BRCGS.
So what is your favourite (or not) standard. Why? Do you think GFSI works? If not why not?