It would be really helpful to know the region or zone from which these comments originate. What does well in one part of the country won't necessarily do well in another region.

Inside the actual database (click on the plant name for each cultivar) you'll see their location printed next to their name.

I went to a tomato workshop in Fort Worth, Texas. The consensus is that sungold wins every blind taste test. Hope I can find a seedling soon

Sungold is my fave cherry. Sunsugar is very close ripens yellow and slightly smaller fruit. They do taste slightly different, but you wouldn't be able to tell the difference unless you had both at the same time.

It's too bad that Sungold is a hybrid.

I've grown Sungold and Sunsugar right next to each other and couldn't see or taste a difference between them. The only noticeable distinction was that Sunsugar seemed to be more resistant to splitting.

dave said:It's too bad that Sungold is a hybrid.

Dumb question, but by hybrid you mean you can't use the seeds to start new plants the next year?

That's right. You have to buy them new and if you try to save seeds you will not get the same variety the next year.

We had an extremely late spring, and cold first half of June this year, so tomatoes could not be planted until the second half of June. Unusual even for us (in USDA zone 4, or Canada 5a/5b). The only tomatoes that have fruited for us now (mid-August) are the Siberian or Russian tomatoes: Black Cherry, Black Prince and the like. This is despite a very hot last half of June and the entire month of July -the other plants just could not make up for the late start.
Next year, just for insurance, I will again plant the Russian/Siberian tomatoes in case we get a late start once more.
BTW we find the "black" tomatoes to be sweet, but to have wonderful mineral, smoky undertones that make them beautifully complex.