first question, what is difference in leaves. i've just planted what i
could buy at the nursery or feed store. potato leaf or not?
second question, determinate and indeterminate. from what i've been
reading i get the ideal that the indeterminate will start producing
again after the hottest part of summer. is this right or am i out in
left field?
i'm just getting back into gardening and i would like to experiment
with heirloom varieties rather than the standard ones around her.
better boy and girl, celebrity and beefsteak. thanks for the patience
and help.
bagins

The varieties you listed are all "tomato-leaf" varieties.

Potato leaf varieties are typically older, heirloom varieties such as Brandywine (and even all Brandywines are not potato-leafed).

Determinate plants are usually smaller and they bear their fruit pretty much all at the same time. Many roma-type tomatoes are an example of this. They don't need much staking to support them.

Indeterminate types tend to be much larger (outgrow the cage and go sprawling all over the garden). Most common varieties of main crop tomatoes and cherry tomatoes are indeterminate. The crop comes on continuosly and you can pick for a long time if frost doesn't kill the plant.

The varieties you listed are, I believe, all indeterminate. They are tried-and-true varieties that are popular for a reason (they give good results to most home gardeners). If you are new to gardening, stick with those varieties for a year or two. Heirlooms can be a challenge. To some folks, they aren't worth the trouble. Yields are less and the fruits can be butt-ugly. Enjoy the hybrids until you are ready to take on a litte more!

A determinant tomato will grow up, produce all its fruit at one time and then quit growing. Commercial growers like them for this reason.

Indeterminant tomatoes keep on keeping on until something stops them (around here frost) and you will always have new fruit as well as ripe fruit on the same plant.

If you want to plan on canning, or otherwise storing, your tomatoes a determinant cultivar would be best since they would tend to have the fruit all ripe at once. The 3 you listed are hybrids, not heirlooms, look for Brandywine, Stupice, and someplace other than either of Rodales Encyclopedia of Organic Gardening since they only list hybrids.

Rutger is a tomato variety that is both determinate and heirloom.
It is one of the best performing, easy to grow and very popular amongst home gardeners.

Bagins, what are you planning to do with your tomatoes?
If you think of canning, go with Roma. It's absolutely the easiest kind to grow, produces heavily and uniformly and it stays nice and compact in the garden.

i like good slicing tomatoes and nice size green ones for frying. thanks.
bagins