iam a medical student doing my graduation..plz kindly help me find medical books of amazon format on the net..i have already done trying to converting my pdf format books using mobi convertor but the output is not up to the mark
6" reader (Kindle, Sony, Nook - doesn't matter) is a rather bad choice for such tasks. Most of medical/technical PDFs include scaned pictures and are quite unreadable on e-readers.
You can try DX, but IMO you should read 'em on a PC (Mac etc.) with a large-screen monitor.
Unfortunately, I can't suggest any affordable solution

Sorry