A QUICK COMPARISON- MXR Analog Delay vs. BOSS Digital Delay

 DIFFERENT BUT NOT BETTER ?  

The difference is best explained visually.

Think of your guitar signal/sound as a 3 foot wide piece of glass.
Analog is that same size of glass but tinted a bit dark. It is continuous 
but colored.  
Digital is that same size of glass but made of 3 pieces noticeably 
glued together. It is identical to the clear glass but not continuous 
so it uses a bit of analog glue. 

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APPLICATION - 

Analog tends to sound like a silhouette or shadow of your guitar sound. It seldom 

competes with your guitar for the listener's attention. It is fatter sounding too. 

Digital sounds like a twin, not an identical twin but a twin. Analog acts more as a 

frame with your guitar being the picture. Digital tends to compete with the guitar 

for attention. It works best when the 2 sounds are meant to be equally sharing 

the listeners attention. 

Neither is better and having both is justifiable.