Maybe we're missing something about
stebu's CDP that over-rides other codes, beyond the usual "you-can't-mix" things ?? Does sound like he can turn it off, though... 'Default' shouldn't mean 'final answer.'
Like other posters, I've got a handful of affiliation codes parked in my profile, and have been able to change between them for comparisons at the 'quote-it' process; can't remember the last time AAA didn't win (usually 10% + perks)

but that's just MY preferences.
/.