I found this Youtube video. Seems like it's sometimes hard finding demos of "clean" sounds what with most guitarists chasing after their Tube Lead tones, lol.

After a minute or so demo the guy goes into really great detail on all the parameters for Reverbs/Delays in this box:

https://www.youtube.com/watch?v=S3M2YJQbM7o

Lush stuff. This thing goes at least as deep as my PCM-81, perhaps deeper!

Way Deeper

Still digging into my Helix to see if it has that diffusion mentioned. Last time I found something like that was the tape delay in a Zoom multi effects pedal I once had. The trick was to use an external foot controller. Don’t recall it being a “ difffuser”, but taking the delay time out to the max made a similar effect.

Yeah, working with my Lexicon, I found there's a lot of "Magic" to be had in Diffusion--especially when it's inside a feedback loop.

After a lot of research, this demo kind of did it for me--just sold my Lexicon so I could try out the FM3. I know there's a lot of concern out there about whether there's enough processing power in it (which could be a big problem processing the two sides of a Stick), but I'm sufficiently interested enough to at least give it a go. Will report back after I get it and have had some time to experiment with it.

It’s really nice unit even better if you deep dive into it. Buy once, cry once. Of course MPO