[TenTec] Perspective on RX-340, Collins R390A and Halli. SX-28

[tlogan7 at cox.net]

Hi folks - 
Can some one give me a non-technical historical perspective on how these three receivers would compare if lined up side by side with ABC testing on the same antenna? The Hallicrafter was early to mid forties; the Collins early 50's and the RX340 current. Ignoring bells and whistles and operator conveniences, how different are these receivers in their ability to hear? Did the Halli and the Collins pick up SSB in the same way a modern receiver does or were they pre-ssb (or right in the beginning of that technology)? I don't know if any of you have the knowledge to cover all those "periods" but I would love to get a better perspective on the development our ability to listen. Thanks.
73/Tim NZ7C