Hate to be the "use the one that sounds the best to you" guy but its kinda true. In general, drums usually fair well with rooms or plates but the plate sound is going to be a more resonant type. For the large spaces you are talking about, you may want to try a hall type. Most of the Waves stuff (Rverb/TrueVerb) sounds good for what it is. Each reverb is gonna be different. For a general purpose reverb, I would actually stay away from any convolution type reverb unless you can build a very large impulse library to cover any type of situation you want to use it for. In my experience, modifying the length of the decay in a convolution reverb always sounds funny to me. If you do go for a convolution type, definitely choose the impulse wisely. I own Rverb, Trueverb, Altiverb, TLSpace, all the Lexicon stuff, the Digidesign stuff, and IR-L and they all do different things well. Probably the most versetile one that I own is the Lexicon stuff. If you have that, I would experiment with different settings and find the ones that you like. Hope that helps more than it confuses.