I am not sure as yet where to get em but, I have read that the best seeds are NON hybrid. Something about viability is better and that they create veggies with reusable seed. Hybrid are not good for seed several years out.

Here is an excerpt and web link:
While the popular trend these days has been toward only growing hybrids, this is not a good policy for folks aiming at self sufficiency. First of all, the seed of hybrid vegetables does not grow true, should you save your own seed. You may get what you want, or you may not get taste, productivity, or even appearance. Only open pollinated (or “heirloom” “traditional”) varieties will produce seed which, when saved and planted next year, will give you the same results as the parent plant.

You can study your seed catalogs carefully. Any listed as “Hybrid” or “F1” should be avoided. Get in the habit of saving your own seeds. This simple practice can cut your gardening costs down by 1/4 or 1/2. Seed saving is simple and very satisfying. Many seed catalogs, such as the ones published by Native Seeds/Search and Garden City Seeds, also have extensive information on seed-saving.
http://www.backwoodshome.com/articles/clay51.html