I have found the R2000 to be a very good radio for general SW
reception. My particular interest is in "utiltiy", that is stations
not broadcasting to the general public, but the R2000 does
a great job for international broadcasters as well.
It isn't a perfect radio by any means, but it is much better then
the ATS900, I have the Radio Shack version, DX398.
Having said that, my wife was so impressed by the DX398 that
we got her one also. Iused to take my R2000 for mini DX hunting
picnics in wilderness areas but the R2000 suffered from the banging
around. The DX398 is much better if for no other reason then it's
small size and lower power requirments.
If you are going to listen at a fixed location, go with the R2000.
If you are going to use it on the go, go with the ATS909/DX398.
I like my R2000 so much I bought another in January of this year.
There is a yahoo group:
http://groups.yahoo.com/group/Kenwood_R-2000/
And Robert Williams has put a web page with the service manual
and some usefull modificaitons at:
http://www.qsl.net/kc7bum/
Regardles of which receiver you go with, be sure to put up the best
antenna/ground system you can. It will make or break any radio.
As others have pointed out the R5000 has bad audio and is a pain to
listen to for long periods of time. The R2000 has the best sound from
any built in speaker I have experienced.
Terry