I've just recently started hearing about The Savage Detectives and 2666 by Roberto Bolaño (deceased), who is supposed to be the greatest Latin American author since Marquez. You might also want to try Isabel Allende - House of Spirits being the one I always hear as her best, though if you're a...
I can only comment on Marquez, since I've not read many novels from any of the others (5 novels among the other 10 authors...).
I loved One Hundred Years of Solitude. It was my first magical realistic novel, and the best I've read to date. I loved how he juggled names and characters, and...