I attended IlluxCon 4 based on the glowing recommendations of Mister Larry Elmore - and boy was he right! A great concept (highlight the original art from their favorite fantasy Illustrators) started by Patrick and Jeannie Wilshire, this is done right and kept small and enjoyable. You can actually meet most of the active fantasy illustration legends all at one one show - better yet the environment is relaxed and casual - the artists (at least when I went) were not "conned out" and actually had the energy, patience and inclination to talk with a fellow (if not as famous, or as skilled) artist (that being me, Jonathan Gilpin, CCG Coordinator! :-) )!!
Discounted entry for currently enrolled art students was a very nice touch then, and I presume now? There was an art contest for students with a nice award...again then, but probably still the case.
Now in it's ninth year the show is coming up in mid to late October - see this link for more info!