Others have shared the info about Steve Goodwin at S/V Panope.
He is an excellent resource. His ideas are highly relevant to the waters I sail in the PacificNW as he is doing his research on the types of seabed we enjoy and the changing currents we must address if we are to have a secure anchor.
I believe you can extrapolate most of his test results to the waters you want to cruise. But you should examine the conditions of your cruising waters and let them help guide you in your goal of safe cruising. The comment that a "knockoff" can result in different results is relevant and is reported in Steve's reviews.
Here is a link that discusses the waters of the Bahamas.
Sitting Pretty Anchoring in strong tidal currents Many areas in The Bahamas make tricky work of anchoring, especially where reversing
southernboating.com
There are members here that have anchored there and they have real life experiences. I visited the Bahamas on a cruise ship and enjoyed a day of snorkeling around the island. I got to observe the mix of sand, coral, and grass beds that are discussed in the links.
Your anchoring depths are likely to be in waters 15-20 ft. a 5-1 scope (the article suggests 7-1) using the 20ft depth would suggest 100ft of chain plus a stretchy nylon rode say 30 ft to buffer the chain to boat connection.
An issue you will face, will be the desire to use a 5-1 scope when all the nearby boats are crowed in at 3-1 at a popular anchorage. This is when you must decide where it is safe for you to anchor. If you are safely anchored and someone comes in and drops next to you... Do not hesitate to communicate the issue to the unwanted guest that they dropped their anchor on top of yours. No one wants to wake at 2AM finding a boat bashing your side.
Clearly avoid coral and seagrass areas. The holding will be bad.
There are many boats with bruce anchors. The problem, as demonstrated by Steve, is when the anchor pulls out due to current or wind change the anchor can fail to reset.
Choose wisely.
My anchor is a Mantus M1 galvanized. I like the Spade as well. 105 ft of chain helps to keep the anchor set.