Hey LedHed:
Man! Are there reverb units out there!!! Plenty to choose from.
I have two units in my studio: an Alesis Micro/Verb and an Ensonique Monster unit. Alesis also makes a very inexpensive NanoVerb but you cannot do any editing; whereas on a more costly unit, you can edit and tweak any programmed reverb patch.
I've added reverb to a drum track but most often the drums from a good drum machine are brilliant as they are.
You will have a ball with doing vocals and using reverb as you can put the reverb into the headset while recording; however, on most recording units, that reverb is NOT recorded; you do that when you mix down and tweak the tracks.
Try to see some units either in studios or in the stores; take a good look at the manuals; reverbs are really not too difficult to control and understand. My MD-8 8 track has plugs for two FX units; thus, I can use one reverb for vocal and put the vocal UP FRONT; ALSO, I can use a different reverb for music or, if I want, record the reverb while doing the track.
There's no one best unit; it's the one that makes your ears feel good. And, when you get a reverb, you will, like most of us, use two or three reverb rooms for most of your work.
Happy Shopping,
Green Hornet