Out of the many saturation plugins, I would position FabFilter Saturn as the excellent all-around performer with most versatile possibilities.
You see that the market for tools that offer saturation has become congested. Since its release, several additional options are available through similar products for example from SoundToys with Decapitator, U-He with Satin, Universal Audio Vertigo Sound VSM-3, Empirical Labs (with a 1:1 ratio) Arousor, different Virtual Tape Machines, iZotope – trash 2, Klanghelm SDRR, D16 Group Redoptor, multi-purpose plugins as Punish by Heavyocity, and many more. Carefully applied Saturn takes your track/mix or instrument to the next level. Take a break after applying Saturn to listen with “fresh” ears to the result. When you get familiar with Saturn, you may need to keep in mind that Saturn is such a potent tool that it could be making the tack worst.
Tape emulation: subtle, warm or extreme tape saturation.Tube emulations: from clean, high-quality tubes to juicy or even broken tube sound.