for the FIC, i found that its noise is quite annoying when i place it very close to me, i.e. right next to my monitor. it's noisier than some quiet full-size desktops. but if i'm playing games or listening to music then the noise is not noticeable. I figured the CPU fan is the noisiest (not 100% sure), so i'm trying to replace it with a quieter fan. on the other hand, it doesn't run very hot, with a 7200rpm HDD, DVD-rom, Santa Cruz, and Radeon 9500Pro, 2.4G@2.53G, 512MB DDR333, CPU temp is about 50C here in the scorching valley area of CA after some intense gaming.
for me, my priority is look, heat, then noise. so if i have to buy again i'll still choose FIC. but if your priority is quietness then you wouldn't go wrong with a shuttle either. oh, and don't forget, if you choose a shuttle, don't trash the 5.25" drive bay cover plate. it looks really nice with it on, but when u take it out to install a CD-ROM it looks ugly. you can do a little modification to make it look good. tape the cover plate on the face of the CD-trey, maybe sure you can activate the open/close button when u press on the cover plate. there you'll have a beautiful case with a stealth CD-ROM drive.
have fun with your SFF.