The Good:

1) In 3 weeks I haven't charged the battery - I read about 3 hours a day the device is always on though (weird) 
2) Its lightweight 
3) It works in "most" lighting conditions (terrible in the dark :) but i'm mostly asleep in the dark) 
4) Tons of books for me to pick from 
5) My audible collection works on here too 
6) I've been able to use free e-books in PDF format on there (actually most of my books are PDF a few right now are from the amazon store) 
7) When i don't want to read with it - i play scrabble on there. 
8) Google Reader works great on it though i hate the navigation 
9) I don't really care about expandable memory because 3GB storage is enough books for me. I can only read one book at a time. 
10) I dont care about replaceable batteries from what Amazon tells me I could own this thing for 3 years and not have to replace it. 

The Bad: 
1) Its not an ipad 
2) The keyboard sucks - tiny keys 
3) no epub support 
4) Zoom feature for PDF's needs improvement 
5) I wouldn't mind colour e-ink especially for blogs and magazines 
6) No touch screen ( I find myself wanting to flick the pages every now and again) 
7) The available accessories are a bit $$$ 
8) Screen may just be too small for the regular - DX is def. too big. 
9) Wifi/3g gets disabled when you connect to PC? 
10) Audible software is terrible - doesn't have much to do with kindle i know.