I was fortunate enough to see the the three 60th anniversary specials. I enjoyed the first and third one, but struggled with the second. I have yet to see the Christmas 2023 special. As I don't have Disney+, I will more than likely buy the UK releases. There is a rumour going around that the US releases going forward may not be forthcoming in the near future, possibly delayed by up to a year. Seems there more to the BBC/Disney agreement than just streaming rights outside the UK. Time will tell...