I would think that a FW
tank is a better starting place for a beginner, but thats not to say they lack complexity. Ive seen saltwater tanks that are just amazing visually and the fish are on average much more colorful and exotic, but ive also seen freshwater tanks that can give any salt water tank a run for its money.
In the end I would say that the fishkeeping experience depends on how much the fishkeeper is willing to invest in time and effort in his or her tank. No one ever gets a good experience out of anything if they arent willing to make an investment in the hobby. The fishkeeper that attends to thier tanks well and takes the time to do everything properly will have a rewarding experience regardless of the type of tank