BCL are very much like BCI. They tend to not get quite as large as most mainland BCI and are quite similar to many of the insular localities. BCA are very much like this as well. Temperament is generally also the same.
BCO and BCC are both usually larger than BCI, even the mainland localities. They can sometimes reach nearly 10ft in length.
BCO (Argentines) can be somewhat temperamental. I have a 1.1 pair of these and while they are usually pretty good and I've never been bitten by either one, I do use a touch more caution when handling these guys as compared to my Colombians.
BCC (Surinam, Guyana, etc) can be more sensitive to husbandry errors. They are not generally a good choice for first-time boa owners (I know you're not a first-time owner - I'm just pointing that out for others' reference).