I use a mix of both the Railway Series and the TV series and fit it into my own headcanon.
I use a mix of canons. There's a little bit from each of Thomas ' canons, a little bit from the canons of other train shows, and my own canon. (But that's only if I write stories with my own characters).
If I write stories related to Thomas, I can take a small portion from each of the canons listed in this survey.
Well...TVS+CGI, though I might bring my own canon into the mix.
Either CGI or my own canon.
I combine everything into 1 canon. I know that sounds stupid, but I work around it.
RWS+TVS+CGI = My Canon
So I'm just gonna say all 3 official canon's
My canon is a mix of all stuck into one canon, along with the reboot characters (Thomas, Percy, Nia, Diesel, Kana, & Sandy) with the first 4 being children of said engines, Kana the sister of Kenji, & Sandy, who shall work with Winston
What do you think?