Unless you're doing it yourself the labour of removing, cleaning and re-oiling is going to offset the cost of replacing the standard element... so saving money is def in the man maths bucket... but I used to have a BMC on an Alfa GTV V6 and the induction noise was superb! And unlike exhaust mods... it only really kicks on wide open throttle so no droning etc.
That said, although only just into Maserati ownership, I would say my 4200 has pretty decent induction noise already so I can't imagine it improving much... but then maybe there is already an aftermarket filter in there which I just haven't found yet.