My opinion
I have many of each and Im now of the opinion
that if your goal is to play tonal music, owning 2 'quality' VCOs with the normal triangle,ramp,square & sine work and one with wavetables is my preference vs owning a single 'complex' VCO.
By “quality” I mean like $$$ VCOs, like from AJH, Synthesis technology, MacBeth etc
Two VCOS + a wavetable can make some very complex sound..and all track in tune
I have come to find that while complex VCOs make some cool noises they don’t play well together w/ other VCOs when it comes to solid tonality- some earlier examples
Teleharmonic,Orgone Accumliator,Rings…
If your just wanting to make interesting sounds
there are totally fine