Take two different classic types of chorus...say a good vintage Boss and TC Stereo Chorus/Flanger, the one in the big black box. Boss choruses are known for their hard and steely tones, while the TC is considerably warmer and fuller-bodied (IMHO of course). What makes them do basically the same thing and have such different character of sound? Is it something about the components and overall build style? Is it the way the two tones interact with each other? Is it just different EQ's applied? Never really gave it much thought but it's 3 am and I have insomnia and I find myself suddenly fascinated with the subject. Go figure.