Good audio interface for vocals - Digi 002 / Motu MK3 / Emu 1616

Hey, I got a $1,500 price range. So far I've been using a Rode K2 or
Blue Baby Bottle going into a Presonus Eureka going into an M-Audio
Audiophile PCI soundcard. The results have been decent. However, I
want to upgrade the weakest link in my chain... the sound card.

Since the Digi 003 released, the price for the Digi 002 has gone down,
which makes it one of my leading choices because of its solid
reputation and of course, Protools (I've been using Adobe Audition
since it was Cool Edit Pro). The Motu MK3's onboard reverb really
catches my attention also as adding reverb on the computer really
takes up a lot of time and cpu power. The Emu 1616 's price and
reviews make it a huge bang for the buck.

I only record hip hop and r&b. I love my Rode K2 and don't think it
gets much better until you start going into the $3,000 range. I've
thought about upgrading the Eureka to an Avalon 737SP or M5 but not
sure... too many good pres in that price range.

I need only 1 channel for recording vocals. Any suggestions on how to
spend $1,500 for better quality?

You can hear my music at:

www.myspace.com/HassanAnsari

All of the tracks use the setup that I mentioned except "Do You Love
Me Back", which is running through an ADK mic and Mackie 1202VLZ
preamp.