ginah:I've been on the Rorqual many times and have done both those itineries. The Sugar Wreck is a very memorable. However, for sharks.... Cay Sal is your best bet. I was have been there 3 times and there have always been lots of sharks at the Blue Hole. Probably the best night dive I've EVER done was on the Cay Sal trip at Damas Rocks. Many huge nurse sharks and lots of other things.
I've done the northern several times also and recently they've changed some of the dive sites. Aside from the 3 wrecks and a couple of other "okay" dives, the remaining dives are very weak.
Avoid the Cay Lobos trip. Although they stop at Cay Sal, going on to Cay Lobos is a total waste of dives and time.
On my last two trips aboard the Rorqual they have had problems with the steering. Hopefully this has been addressed.
All in All the Nekton runs great trips and I highly recommend them over many of the budget operations also found in the Bahamas.
thats good to know ginah. I guess when I eventually do take a nekton trip it will be the cay sal trip.