-Final Mix
-amp sim (so far, still Green Machine Amp II, though with the hardware GDI21 box, I could make do without I guess!)
-Convo Boy
I don't really use modulators much, so I could do without I suppose... if I absolutely had to... though they're certainly nice to have around.
In a way, my selection is cheating, because Final Mix includes multiband comp, EQ, and limiter. Green Machine II includes a variety of effects, too, though as far as I can tell you can't completely bypass the amp sim part so it still wouldn't be absolutely pristine to use, say, the chorus on a vocal part.
To answer the original thread's intent:
-Reverb
-Compression
-EQ
Aren't those the 3 everyone would pick?

