mastering reverb

[rhythmtech]

although i understand the premise behind it, ive never had a call to use it until now.
all i want to do is add the slightest touch of atmospheric glue to a track without washing it out too much.

does anyone know what the best reverb type to use is? plate? room?

also where in the chain should it come? logic would dictate after the compressors (but logic doesnt always hold thru with audio production!!)