Have you tried the Tsar-1 reverb from Softube?
I bought the "studio collection" pack with the verb, and I'm really happy : I find it more "natural" than ValhallaRoom for a drum room (but the Valhalla is still usefull!).
I use mainly this pack (with FET, Dynamite and Focusing EQ), for dynamics, saturation and EQ.
Happy user here!