With lots of books loaded on the reader and the memory card, it does take a while to read all the data into memory but nowhere near as long as it would have taken my 500 to load the same number of books! And once the data is loaded, the instant-on is terrific, and the big difference between the 500 and the 700 with the same number of books, using a memory card, is that it significantly slowed the 500 down. Even setting a bookmark on the 500 took a very long time when I had a lot of books on a memory card. Not so with the 700!