From the SPACE I would recommend these:
From MODECHOVERB: Solardelay, Flange Tiles
From ROOM: GuitarRoom
From SHIMMER: Shimmer, Quasar
For reverb, “subtle” is found with the Mix Knob below 20 (as opposed 100).
These are just off the top of my head. There is also a delay preset called Copy Cat on multiple algorithms that is simple but potentially useful.
