cspeech and ASR refer to the same thing: Automatic speech recognition or voice operation.
I have a 920TMC and I have found the following on SE 9.051 with WCE 845.2645:
EPT: not tested, I do not live in an area with a lot of tunnels (The "Dutch mountains" is a bit of irony on my behalf).
IQ Routes: Works.
ASR: works, but results can be "surprising". This goes for the original navcore too so I attribute it to the microphone quality.
ALG: Works. Both arrows and images.
TMC: Works. I get the bar, it gives me traffic info and options for faster routes in case of queues.
Auto day/night switching: I don't need it so I haven't tested it. I run x40 mode for the icons and I have day/night switching in the button on the main screen together with quick access to map error indication, Postal code navigation.
Ecoroute: is available. However I would like to know the algorithm for eco route calculation. My Prius is more frugal on B-roads than on the motorway/ highway.
Download original 8.351 for x20, 530/730/930 and 630 (still to be patched by ydGPatch or Easyusetools):