Yo El Barto &
El Capitan:
A mic pre is something that a studio should have. The best on the market is made by Martinsound; the most popular at the moment is the ART dual channel and the ART tube. I have the dual channel and it is a nice piece of gear.
Now, for the FX processors: well, if you have a limited budget, the Alesis
Company has the mini-verb, midi-verb,
micro-verb and the verbal-verb.
I have an Alesis verb of some sort and it is nice programmable box with dual channels in/out. I'd like to get a Lexicon but, at the moment I have another reverb, namely an Esnonique DP-4 which has more stuff on it than you can imagine. And, you know, most home studio people find two/three reverb rooms and use them most of the time; I have gone into programming and saving patches but most of the time I'm using 025 on the Alesis.
In summary, I'd say you can rent a box for a few months and see if you like it. It is nice for my clients when they put on the headset and hear this great reverberated voice in the phones....they love the ambience. I always add reverb later in the mixing process; I don't record the reverb on the original take.
Well, keep shopping and reverberating,
Green Hornet