Kindle or no kindle: reading go digital

http://www.amazon.com/Kindle-Amazons-Original-Wireless-generation/dp/B000FI73MA
or
http://www.sonystyle.com/webapp/wcs/stores/servlet/CategoryDisplay?sssdmh=dm11.141663&catalogId=10551&storeId=10151&langId=-1&categoryId=8198552921644523780&N=4294954528&XID=E:reader_082609:header

I love books that I could hold in my hand. But when travelling, reading device is not a bad idea.