Order Toshiba e740 Pocket PC

I bought the pocket pc to read e-books. Every time it ran out of battery I had to reinstall the operating system and the e-book. It took too much of my time. I used to be paranoid about the batter level. I still would like to buy a pocket pc but I don't want to reboot it every time the battery runs out. What should I look for?
I saw the iPAQ 111(64MB SDRAM), and iPAQ 211(128MB RAM) with 256 FLASH ROM.
Do you think that the FLASH ROM will solve my problem?
Do you recommend the iPAQ 111 for e-booking and personal use?Get more detail about Toshiba e740 Pocket PC.