I am planning on taking the Taka trip in January. I took Spirit of Freedom last time and it was amazing, but we only did the Ribbon Reefs and Cod Hole, I hear the Coral Sea is the best diving in the area. Taka is one of the best budget options for live-aboards going to the Northern GBR and Coral Sea. If you book it when you get there and not ahead of time, you'll save a lot of $. The same trip that was $1,050 AUD online was $550 AUD when you book it at the store. But then of course you have to take the chance of it being booked. If you have a lot of time, then I suggest booking when you get there, if not, you can take the chance or book ahead. Have fun!