Bahamas Cruise?

[jacinda]

We're looking to do a 3-5 day cruise to the Bahamas when we visit Florida in December. Wondering if anyone has cruise info they could share, as there are SO many cruise liners and sites, it's hard to know where to start . Is there a good comparison website where I can see everything on one page? Does one site give bigger discounts than another? Which cruise liner would you recommend for families with 13yr old and 16 yr old kids? We'd be looking at cruising around the week of Christmas sometime.

This will be our first (and probably last) family cruise experience, so I don't want to book on an old ship that has had better days, kwim? Would appreciate any insights you all have, and any websites you recommend.