The same OSU people that developed 'Oregon Spring' and 'Siletz' tomatoes also came up with 'Legend' tomato, one they feel is superior to both. A determinate variety, 'Legend' tomatoes tend to ripen around the same time, and over a longer period of time due to its superior resistance to late blight.
As with any tomato, plant the starts deep, leaving only two sets of leaves above ground, even if it means stripping off bottom leaves on a particularly leggy start, or actually laying it at an angle with just two sets of leaves above ground. All the little hairs along the stem will become roots, providing that much more water and nourishment to the plant. You'll also want to install your support, be it a cage, trellis, or some other structure, at the time of transplanting so the roots aren't damaged later on.
Water tomatoes deeply and only when the soil is dry to encourage flower and fruit production. One trick to getting water down to the roots and not on the leaves is to cut the bottom off a 16-oz. to liter-size plastic bottle, throw away the cap, then partially bury the cap end of the bottle into the ground close to the tomato start. Angle it slightly so you can water into the bottle.