Store tomatoes anyone

This year I have grown De Colgar.
Don't think much of it.
Blossom end rot. Can't recall ever having that cleared up now but lost a lot because of it.
Also rather soft.
Preference large tomatoes.
Firm tomatoes
And a shape that doesn't encourage blossom end rot. Someone says concave end is  more likely to get blossom end rot.

De Colgar is a hanging/storage tomato, so looking for a a better variety of this type, I presumed...

I'm wading through my notes/posts to see which variety I grew in the past. It may take a while, as my memory is not what it was  Although it couldn't have been that good, 'cos I don't remember repeating it, either