We just published some example settings for vocal doubling, reverb, and delay using the Raster 2 and Context 2:
Vocal FX Chain with Raster 2 and Context 2 (Red Panda knowledge base).
The Raster and Context give you a wide range of stereo reverb, delay (2x), pitch shifting, and modulation effects in only 6" x 4.5" of space - easy to fit on or next to a mixer for live sound or recording.