If your tracks are ever actually finished, you're not human
also, Nexus blows. generally anything that doesn't have advanced synthesis methods like Serum (or kind of Massive) is a turd at this point and you're using all the same waves, all the time, in every synth you get, you're just paying or picking it for its presets and interface, which in the long run is virtually pointless. Serum is /the stuff/. I'd also recommend LuSH-101, it's big and serious and has a very warm, very real sound by default.
... also, short answer, should you get an brown townog synth, yes.......... it's incredibly more ideal if you're actually serious about what you're doing.
One, it won't require CPU load to play live or with MIDI sent to it whether you are at home or performing. Two, the brown townog synthesis methods are far superior to anything that is emulated or digitally produced through a softsynth, period (we just aren't there yet in the form of computing. maybe in a few years or so, definitely way closer than ~10 years ago when I joined these forums)And three, you buy it once, you have it forever until you break it. You look a lot less lame at a show if you have a physical synth to play, or even in a studio, or even at home. It just feels way better. It's more intimate. I've spent over a decade just flipping from VST to VST and they all start to feel the same, it's not exciting anymore. That doesn't happen with a physical, brown townog synthesizer. You want at least one physical brown townog synthesizer. .. if you're serious.