I'd like to recommend this very active group as something
you may be interested in:

http://www.dxer.ca/component/option,com_frontpage/Itemid,1/

There are some very smart people on that group and some
very interesting and very up-to-date articles on equipment.
I found it when following some links for information on
"Ultra light dx'ing" ( simple radios for maximum dx ). I joined
by registering; it is a very simple process.
-Hue Miller