<B>BCC</B>
Temperament-wise they are much more sensitive I find. They are a bit more spastic in their movements than BCI, more of a security factor it seems like. They are variable in temperaments, I have both ends of the spectrum. My male must be restrained, if you let go he strikes repeatedly at your face, and he gets so upset he wgas his tail like a dog, thank goodness he's small at only 5.5'. One of my females is perfectly laid back for it all, never even an attempt to bite. In all the BCC I've had the pleasure of working with I've found a higher percentage to be a little nervous than with BCI.
In terms of care they like it slightly warmer and humid than BCI and are less forgiving. If you do screw up its much harder to get them back on track again as well. I also find them to feed less frequently.
<B>Hog Isle BCI</B>
Variable temperaments. I don't find them to be nervous at all, and often they are just bluffing. They are voracious feeders and while in their home thats all thats on their brain. If I so much as walk past the cage at night you hear a big *thwack*. My female is not at all agro... though she has had one or two bad days, but don't let her confuse you with food! People often make the mistake of labelling them as agressive when in fact they are just looking for food. Once they are out they are usually fine. Simple care, same as Colombians.
If I had to pick between the two I couldn't. I like them both, but for different reasons