Last night, I was looking for more info on the Grundig G8 mentioned in another thread.
This site seems awfully useful to me, in terms of number of radios tested, and the criteria (sensitivity and selectivity being at the top of the list) as it applies to AM DX or just plain listening to non-locals:
http://radiojayallen.com/am-portables-mega-shootout/
I missed it last night, but now see that many of the radios have more complete reviews accessible from the bottom of the page.
No date that I could find on the page, and some of the radios haven't been in production for decades.
Still, some good info there.