If you are only interested in scifi, then the EBW1150 from
www.ebookwise.com is a great choice. It costs about a third of what the others cost, and there are about 30,000 scifi titles to purchase right there from eBookwise at very good prices. However, the format is becoming obsolete, so look over their titles and decide if you will be satisfied with them before purchasing the reader, because that is one of the few places where you will be able to buy already formatted books for instant downloading. Otherwise, there are additional steps that have to be completed in order to convert books into the proper format.