There's only one 'studio reverb' which is a low-latency reverb, ideal for multitrack and real-time. Then there's 'reverb' and 'full reverb'. Full reverb is very processor intensive, but has the most complete set of options for control. Reverb is a typical 'verb'. Which one you use is up to you, but full reverb is capable of the best sound, if you feel like taking the time to set the options.