>> ... I also want an ereader type of device for tech manuals, text books, newspapers and, magazines ...
I have a bunch of .pdf files on my Kobo's SD card that I access.
Have you seen the newspapers that Calibre allows you to download to your Kobo?
Same here, most of the thing I read on my kobo are Tech "books", physics/math textbook and what ever pdf i want to read on X subject.
It takes maybe 5 min to get them ready for the on Kobo, (Delete margin, play a little bit with the bookmark if I am allowed, etc) The kobo does a great job once you passed that 5 min to "get them ready".
Also, dont forget www.instapaper.com
if you need to read a website on your kobo. Works , most of the time, perfectly.