I’m on a Keeley Andy Timmons Halo pedal kick lately and designed several patches using different delay algorithms.
I own the pedal so am A/Bing it as much as possible while still trying to get the best out of what each Eventide algorithm delivers.
Note: This one is about as close as I could get to the pedal. I’d say it is about 90% the same and in the mix you’d probably never know the difference.

TL;DR – if you’re trying to get as close to the pedal as possible this is the one.
Thank you for that. I had a play with it and I think it’s more ‘halo-like’ if you increase the filter to about 75. It gets rid of the repeats on the attack of the note and makes it more reverb like.