loan, I'm taking it you don't own a quality pre. I don't even own a quality pre, I am using the stock pres on my Xenyx mixer which, while being fairly transparent, are not exactly sterling examples of a preamps ability to give a mediocre mic the best sound. I think nathan was just trying to express a point that buying the non-USB mic would be a better fit because you could get the mic and a cheaper interface now and later spring for a superb interface and still be happy with the mic. But buying a USB mic locks you in for good on the quality level of the USB connection. Frankly, I suggest staying away from USB all-in-one mics. If that's the route you're thinking of, then get the AT mic sans USB and hook it up with a USB<->XLR adapter like the Icicle or MXL's USB converter. Otherwise, spend a little bit on a good interface.
http://pro-audio.musiciansfriend.com/pro duct/Blue-Icicle-XLR-to-USB-Mic-Converte r?sku=330275
The Icicle, 60$, good quality USB adapter
http://pro-audio.musiciansfriend.com/pro duct/MXL-Mic-Mate-XLR-to-USB-Mic-Interfa ce-WPhantom-Power?sku=270707
MXL's version, the Mic Mate, 40$, decent quality
http://pro-audio.musiciansfriend.com/pro duct/Lexicon-Alpha-USB-Audio-Interface?s ku=245507
Lexicon Alpha, 80$, decent bottom-end USB interface offering more than just a USB adapter
http://pro-audio.musiciansfriend.com/pro duct/Phonic-FIREFLY-302-PLUS-Portable-Fi rewire-Interface?sku=582373#used
Phonic Firefly, 100$ new, lowest end Firewire interface, also has S/PDIF in and out
http://pro-audio.musiciansfriend.com/pro duct/ART-USB-Dual-Pre?sku=703092
And last but not least, the ART USB dual pre, 100$, decent pre to start with