If you're going to be using the net on the road then spend and get the wireless modem. If this is for use at home primarily then get FLOW or the LIME FTTH packages. I'm guessing the LIME packages would be better these days until FLOW does better.
While the FLOW package is more expensive it is also much faster and has no caps on your data (except if you over-use your bandwidth - slows down but doesn't cut off). Digicel currently has no unlimited plans for any reasonable price IMO.
Knowing the solution doesn't mean knowing the method. Yet answering correctly and regurgitation are considered "learning" and "knowledge".