Originally Posted by Over
If your main objective is to read manga, buy a large screen ereader (>9,7"). The KindleDX handles manga very well.
It reads image files. It can even read those images from a zip file (or CBZ, which is the same).
I have a Kindle DX and can verify that manga does look great on it. Although the DX can read image files, it tends to render the pages rather slowly (meaning every time you change the page it can take a few seconds for the next page to load). Pdf manga, on the other hand, works better on the DX. Pages load very fast, and you can jump to a page number (can't do that with images). You can use my free program to process manga scans for the Kindle DX (output properly formatted images, image zips, and/or pdfs): http://www.mobileread.com/forums/showthread.php?t=75628
The iPad also works well for manga if you don't mind the lcd screen. Manga pages still look better on the DX, but the added functionality of the iPad (pinch to zoom, organize by comic, color for those few manga pages that have color, zero load times between pages, and of course all the functionality of an iPad like a web browser). There is an iPad edition of my manga processor here: http://www.mobileread.com/forums/showthread.php?t=79004
Having both a Kindle DX and an iPad, if I could only keep one it would be the iPad.