I have an EMU 0404 and am quite impressed with it, but mine is an uninformed opinion as I can't compare it with anything else.
One thing I will say about the EMU is don't buy the internal one, it's a lot cheaper, but the USB version is supposed to pack better hardware.
I chose this one based on a recomendation from MDV of these boards and some research of my own. I use it with a Shure SM57 mic. It will take a direct input from an instrument lead as well and as a side effect I can use it with headphones to practice :)
Our first foray's into recording can be heard in the players section, postings by Prozacbear (my wife), made using this gear (amaturishly).