Ok, so here I come to defend my reader. I don't bother with converting to LRF or EPUB since for various reasons, that's not my cup of tea, so I don't know how helpful this will be but there's a script floating around here that coverts from zip or rar to pdf. sony-convert-archives2pdf is the name. Please see samples attached.
By the way, I have tons of manga on my reader and have no problems reading them.
http://66.104.77.10/reader/cimg0003.jpg
http://66.104.77.10/reader/cimg0004.jpg
http://66.104.77.10/reader/cimg0005.jpg
http://66.104.77.10/reader/cimg0008.jpg
http://66.104.77.10/reader/cimg0009.jpg
http://66.104.77.10/reader/cimg0010.jpg
http://66.104.77.10/reader/cimg0011.jpg
Last one is a little blurry, bad pic, it looks crisp, just my unsteady hand.