As a previous visitor, you know there are tons of options. The real question isn't what my favorite lodging option is (although I am happy to share that: Carib Inn), the question is what is the best place for you to stay.
To that end, it would be helpful if you could share some information with us.
a) Budget?
b) Is being on the water a plus, a must have, or a who cares?
c) Is have a pool a plus, a must have, or a who cares?
d) What other amenities are important?
e) How large a place? Full size resort (like Buddys)? Standalone villa? Something in between (4 to 15 units)?
f) Location? (Walking distance to town? North or South?
g) How many and what type of units? (Three bedroom units? Two bedroom units, etc.)
With 8 to 16 folks, you have some options that others might not have. For example, the Carib Inn has a 3 bedroom house for $170/nt + $10pp for the fifth person. So, lets assumd you have five people there. And then you also get the two bdroom unit for the same price and have 3 people there. (You could add one more to each unit for $10 pp/pn for a total of 10). So that is $370/nt for the 10 people (plus the pp/pn taxes). Or about $37/pp pn.
Or you could go to the Sunbelt site and start looking at the Villas that old around 9 or 10 folks for probably twice the price.
There are lots of options, what are your interests/requirements?