so yeah, you've caused a bunch of confusion by bringing echoboy into this
1) what are you looking for in a delay? Echoboy is relatively simple, so that confused things even further. You say "automatable", but that's all of them. Is there a specific feature set that you're interested in?
2) Have you browsed the selection on maxforlive.com? If you haven't, I'd go there now.
3) How "under the hood" are you looking to get? Almost all max delay patches are tapin~/tapout~ sets with different things messing with them, but I don't know if you want to go deeper.