Finding quality soundfonts on the web is nearly impossible! I have found some nice ones on Hammersound.net and also on Personalcopy.com. I've had good results with pc51d.sf2 (57meg) and MagicSFver2.sf2. (69meg) Never got Fluid to work with my card. Realfont 2.1 works but is pretty glitchy. Pretty much any soundfont over 100megs in size becomes unstable. I have a feeling that the soundfonts you pay for aren't much better than some of the free ones. (though I haven't actually bought any yet)
Can anyone recommend any sites worth checking out?