I have never heard a digital chorus, phaser, flanger, vibrato, or autowah that sounds as good as analog ones do. For these types of effects, analog wins hands down in a hurry!
With delays, I am torn. GOOD digital delays have an adjustment on the Feedback control that allows you to have the high end of the delay decrease a bit with each repeat, something that happens naturally in the analog realm. I love this effect! But, I do on occasion also love how I can have a part repeat almost infinately with no sound degagretion like you can with a digital delay.
Of course, digital reverbs are a must! They just sound live a reverb should.
Hey,
a Lexicon PCM 80 does a lot of effects! It does them ALL very well, but the box is also over $2000 new!!! So, price of course in this case means higher quality.
In the realm of guitar processors, I hate what digital effect processors do to the sound. About the only way to insert one in a live rig is if your amp has the ability to blend the effect signal with the dry/unprossesed signal, rather than relying upon the effect unit to do the mix. If the effect unit does the mix, your guitar signal, which is analog to start, get's converted to digital, processed usually with very low internal bit processing, and ban algorythems in the cheap units, dithered, then converted back to analog to feed back into the amp. IF you have the gain structures on the unit set right, it will sound better, but all in all, you can still hear the guitar tone get sort of edgy in a way that eq does not help with!
The old stomp boxes, the analog ones that is, enjoy being analog!
I HAVE heard players get pretty decent tones with digital effect processors. But this is the exception rather than the rule. A lot of guitar players come into the club I mix at with both digital and analog processors, and I have much better luck with good guitar tones with the guys that use the stomp box pedals.
Ed