looking hard at the SM7, all the reviews make me think this would work precisely for the particular problems i am experiencing with my current mic, anyways, i have read where people are recommending a nice preamp to go along with it.........so is that accurate? I am using an Apogee Duet into my iMac 24" 2.66. Do you all think an outboard preamp is necessary for this mic, and also keep in mind that i don't have S/PDIF ins on the Duet so it would be an analog connection XLR into the Duet, if that matters to y'all, Just don't want to buy this mic and find that I am gonna need to pick up a preamp as well to achieve the rave review status!, and if you do recommend a preamp, what would you suggest in the 100-200 price range? Thanks a milly in advance.