Of OP heirloom ones Bulgarian Triumph, no question, just superb as to taste and production.

Of the seed sources listed via the link below I'd suggest Tania, who sells seeds for about 600 varieties, Jeff Casey or I think Sandhill as well although I didn't check. Not all the updating for seed sources was done for 2011 but you can check out Sandhill via Google if you wish and they also sell seeds for about 400 tomato varieties and many other crops as well. But note when when Sandhill accepts orders and HOW they accept orders.

Hope that helps.

Carolyn

Here is a link that might be useful: Bulgarian Triumph

Agree with the Bulgarian but I also like Kimberly and Elfin - depending on the size fruit you want.

Dave

Ildi is wonderful. Prettiest tomato plant you will ever see, and makes so many blossoms its hard to see the plant. There are reports of one plant making 650 tomatoes.

Yes, Ildi is wonderful, but just as with Riesentraube it's a multi-flora type with those huge number of blossoms on a single stalk, but not a cluster type, which means not a cherry, but trusses with larger fruits about 2 inch in diameter just as you'd buy from the store that are called something like on the vine types.

Carolyn