Hi Nancyrobin! Welcome to West Palm in advance! I think overall, you really can't go wrong with most "well known" dive ops. So, I'll give you a few thoughts and let you go from there......
RE: Scuba Club...
Plus: as Splitlip says, they are more accommodating of newer divers than some other ops. This means more dive masters/guides in the water, and there is a more clear plan: go down, stay together, follow the guide, and come up more or less together.
Con: This means diving with a larger group, which can sometimes make for a crowded feeling dive, with many divers sometimes bumping in to one another. Additionally, if you're great on air, and others aren't so good, your dive may be much more shortened than you'd like.
Other thoughts...
The last I checked, SC offers both one tank and two tank dives. If you're a more laid back diver, or just prefer one dive at a time, sometimes the one tank choice can be handy. But, a two-tank dive will likely net you more dives/dollar......
SC also has it's own mini-resort in the sense that it's a shop, a dive boat (or two), with a little lodge, pool, etc. So, there are always people hanging around and it can feel easier to ask questions, approach people, etc. When I was a very new diver, I appreciated feeling that I could ask a question without being made to feel stupid.
Based on that input, feel free to throw out other questions. If you'd prefer alternate options in the area from divers here, my preferred op in the area is
Pura Vida. They are a bit more expensive than others, but I always feel extra welcome with them.
Feel free to PM me with questions as well; I also imagine others may come along with valuable input as well.
Enjoy your diving, it's a great time of year here.