I have done both the root, and sd install. I bought it for my wife sunday and got myself one last night. She spends upto an hour reading on her evo so I thought this would be nice. After I got honeycomb working I had to have one. Now I have it linked to my Evo for wifi. I love this thing, plus I can always sell it for 150 after a year and get a newer (faster) device. Screw you Apple. Here is a link to the root I used: http://forum.xda-developers.com/showthread.php?t=922870 and http://legacyschool.us.to/nookdev/clockwork/rootpack-instructions.html

Good Luck