Just about any salt mix will do the job, even the oft-maligned Instant Ocean. It all depends on what your goals, demands and tolerances are.
Instant Ocean, for example, can have quite a bit of variability from batch to batch, and it's not terribly rich with many of the elements we need for our corals. It also dissolves slowly. So if your tank is tolerant of variability in water parameters (FOWLR or soft/LPS-dominated) or you typically have plenty of time to mix your salt, then Instant Ocean works just fine.
Myself, I'm not too fond of the residue that IO leaves behind, and I tend to procrastinate doing a water change if I have to wait for it to fully mix, so I'm starting up with Tropic Marin as soon as my current batch of Fritz salt is done. That said - Instant Ocean is perfectly adequate for even the most demanding of tanks so long as you keep up with your maintenance and dosing. So I won't say it doesn't matter, but you can't really make a 'wrong' choice.