Thanks. It looks like those who speak the Queen's English need the English International option!
The MC Tools are actually named differently to avoid the confusion anyways.
The "Upgrade Tool_GetWindows10-sds_______exe" for the 10240.
The TH2 November_MediaCreationTool.exe being quite obviously the Threshold 2 Update downloader.
And then you see the Updated_MediaCreationTool.exe for the subsequent updated TH2 build where each newer set of updates has been rolled into it.
Here I found having several browsers actually gets me past the Unable to Sign In page problem fast and easy. While Firefox or other 64bit variants will stall Opera, Pale Moon, and a couple of others always seem to make it. I found that also works out for the separate Insider build ISO downloads now being as well as for the Tech Bench site.
I've now downloaded file Win10_1511_2_EnglishInternational_x64.iso from MS Techbench. This contains setup.exe dated 27/04/16 version 10.0.10586.0. What Windows version is this and how many updates will be needed? My laptop which is up to date has version 10586.318.