Hi mate - I have a usb card - Novation Nio - very cheap and Im really happy with it - no problems at all and its USB 1.1!
As long as the drivers are stable you shouldnt get a problem with latency or pops / clicks. Dont know about the particular card you mention but M Audio stuff is normaly fairly solid.
Id reccomend the Nio though if your on a budget - its all I could afford at the time but am well happy with it. Its about the same price you are looking for.
link here ... http://www.thomann.de/pt/novation_nio_24.htm
and manufacturers website ... www.novationmusic.com
Saying all that - Ive never had a firewire card to compare to