I don't think the brand of seed is going to make much of a difference unless of course you buy it at a big box store which may not be good quality. All seed is tested for germination and other factors. The mix you used sounds reasonably ok but the annual rye makes it sound like it is a cheap Contractor blend. I seed 70-80 lawns a year and have for a long time. I do hydroseed mine. The mixes I use are one that is about 25% Bluegrass, 25% Creeping Red Fescue and 50 Percent Perennial Rye. Even though we are not very close our soil conditions, temps etc should be similar. If you don't mind I would like to ask a few questions to try and see if any other factors come into play with your problems. How much seed are you using per 1000 sq. ft. How are you seeding? Spin Spreader, slit seeder or ? Are you applying a fertilizer as well and what kind? How about mulch, are you shaking straw, using compost, nothing or ?