Decent Preamp

Alright so I was thinking about converting to rackmount and I was looking for a decent preamp. I'm looking for something with alot of gain (even though I might not use ALL of it) good tone, and nice reverb. I'm going to start a black metal band so I need something with alot of ambience and right now I'm tied between a Mesa Boogie and a Voodu (or Vudoo, whatever) online. The tone isn't too terribly big of an issue because I'm planning on buying a Behringer 31 band rackmount EQ. Any suggestions? My main reason for a good preamp is because I'm hoping to get into recording. P.S. my budget is around $700 for the preamp. Thanks for caring!