I'd go for the Oversized Hardcover reprinting issues #1-9, which is still really easy to get hold of (even though it pre-dates the Omnibus by about 4 years):

http://www.amazon.com/Alias-Brian-Michael-Bendis/dp/0785108726/ref=nosim/marvelmasterw-20

Last Edited By: themouseholecat Mar 7 12 2:32 PM. Edited 1 times.