I think the rice cooker is about as good as a generic cheap rice cooker of the north american variety, but not as good as a good japanese/korean/etc. one.
The trick in America at least is to go above the $20 price point. Most of the $40 aroma rice cookers will do just as good as the $200+ zojirushi for a simple long grain white / jasmine rice.
If you want sticky rice, congee or a korean style multigrain blend, then yeah, most cheaper American cookers will fall short.
Yes I've had a Zojirushi induction pressure rice cooker for 6 years and the sticky rice & porridge it makes is incredible. The instant pot is great but we use it for other things.
Obviously YMMV