Red Alert, Koralik and Losetto bush tomatoes

[Primrose]

I'm starting a new thread to try and get general feedback on these three varieties which were in the recent Kitchen Garden anti-blight tomato trial as my plants have just arrived.

OH has kindly given me his opinion of Koralik, but I wonder if anybody else has grown these varieties, what they're like and what they think of them.
I'm very tight on growing space and don't really want to grow varieties which end up being a disappointment.

For the past two years, I've grown yellow tumbler tomatoes which I've found to be quite tasty and also blight resistant in our garden, and I'm reluctant to displace them for some "unknowns".

[John]

Red Alert is an excellent bush variety - reliable, early, medium size fruit and tasty. I always grow a few plants every year. It is a standard bush type in its growth so not really suitable for growing in pots and so on. Growth is vigorous but easily kept in check with some judicious pruning.
Don't know the other varieties.

John