recommended Analog-to-Digital convertors?


I have a friend that's trying to archive his LP collection and I have no experience in A/D converters. Presumably he would want to output RCA or balanced to a A/D converter that exports via usb or firewire. Suggestions at $500, $1K and $2.5K+ price points would be appreciated.
jennyjones
The apogee duet is nice little dac with a>d as well for $500, but it is mac only.
It only outputs via xlr and rca digital but the wadia 17 connected to an alesis masterlink gets me some pretty good lp recordings.
Mdowns32 -- She wants an ADC (analog-to-digital converter), not a DAC (digital-to-analog converter)!

Regards,
-- Al
Thanks for the suggestions. Does anyone know if current Intel DuoCore processors are capable of 24/192? I remember reading somewhere that they were limited to 16/96. i.e. My friend has a MacBook Pro with an Intel DuoCore (probably 2.5MHz) so would the added information be stripped?