I'd further add you would be best off looking in the period from 1997 to 2000 inclusive. From 2001 they started to get into demo's requiring a higher spec than the standard Falcon.
Go here http://dhs.nu/ - The goodies are arranged in year order in the top right hand corner.
hey cih are you sure about that? ;-) afaik mine, earx's, no's charon's and some others' demos runs fine on vga, some of them use fpu but are focused on std falcon ;)