Welcome to the Minnesota Gardening Forum, one2many! Just one tomato variety? I can never decide and I want early ones and late ones, so I wind up planting many different varieties (everything except paste varieties, usually) because it's so much fun. Are you open to other colors (I grew Aunt Gertie's Gold last year and was very impressed), or are tomatoes supposed to be only red or pink? I haven't tried it yet (this year), but Sioux is supposed to be prolific and very tasty.

If you haven't already done so, you might visit the Tomato Growers Supply company site and look at descriptions for various indeterminate types (they bear all season rather than all at once). Also, you can learn a lot by going to the Growing Tomatoes forum and reading notes to see what people recommend. A number of Minnesota growers and others from northern climes post there as well.

Here is a link that might be useful: Growing Tomatoes Forum

Eva Purple Ball is a nice little tomato--I've only grown it in a pot so far, but it might get garden space this year. Box Car Willie has a very nice old-fashioned tomato taste (I've eaten it from the farmers' market) and is supposed to bear very heavily.

Also, if you can borrow a copy from the library (if you don't want to buy it), you might also check out 100 Heirloom Tomatoes for the American Garden. Its descriptions are very informative and the pictures will have you drooling. Its author is a very frequent poster on the tomato forum.

Here is a link that might be useful: Tomato Growers Supply Co.

Greetings,
Last season I grew Sioux and Druzba as main crop tomatoes. They were good eaten fresh and for canning with very good flavor. I was impressed with a mid season Oxheart from Heirloom Acres. It though was not as flavorful, but I was blessed with some softball size fruit with watering.
I grew Riesentraub and while a salad tomatoe they grew to ping pong size and when I mixed them with a Red Pear it produced the best juice ever.
The Oxhearts and Riesentraub took more heat to germinate, but from 2 plants of Red Pear the yield was about a peck.
As a free gift a company sent me Green Zebra which I tried. They were really prolific and tasted well.
A final selection I am really fond of, but it is late for me in the central Minnesota area is Rose (the Amish variety). They have been fruity, sweet and are huge when watered.
The best though is Sioux as it is midwestern, sure at setting tomotoes, resists cracking, nice flavor and is a pretty tomatoe.

Here is a link that might be useful: Heirloom Acres

I can most definately recommend "German Red Strawberry" They are fantastic sliced on a sandwich and make mighty fine sauce! I grow many varieties of heirloom toms and this one plus the very late Arkansas Traveller both keep getting planted. This is an ox-heart type, so it's a slow starter, but WELL WORTH the effort! When it gets going it'll grow and take over and you'll be very happy it did. It also has a nice long production all summer. Look for seeds online, several places carry them. OR - as I'll be doing starts again, if you'll be at any spring swaps that I may happen to be at I'll bring you one or two.
-Marie

Thanks for all the suggestions. I have very little space, and a dual purpose tomato will be perfect. I have canned eating tomatoes, but they do not yield the meaty sauce I want.