Still no time for clips, but here's a few things I've picked up.

The only big feature that this doesn't have that my DD-6 did is different repeat tempos (viz quarter note, dotted eighth, quarter note triplet). It also has a warp function that I used once or twice.

The DL-8 has more delay time (5.2 vs 8 sec), longer loop time (5.2 vs 20 sec), plus the different analog emulations. It also allows you to choose true bypass or buffered, the latter allowing the delay trails to continue even when the pedal gets disengaged.

Both have tap tempo and stereo inputs and outputs. The stereo output is a bit more flexible on the DD-6, allowing for panning (which I assume means ping-pong), one amp effected and the other direct, and stereo. The DL-8 just allows for ping-pong.

The modulated, lo fi, and tape types have a range of 100 ms-1 second. The analog type goes from 35 ms-1 second. That throws you off a bit if you are just sweeping through the delay types. Obviously you wouldn't expect a slapback type to be even close to the other ones. I stand by my original assessment that I like the modulated and tape delay types the best. It's not that the others are bad, it's just that those are the ones I keep coming back to.

I did get to use the looper a little bit. It's pretty straightforward. It will require some practice so I can get my timing down. I'd imagine that is true of any looper. Seems like it will be a useful practice tool. My son came downstairs to my office looking puzzled because it sounded like I was playing two parts at once.