I have used Burpee and I think you may be right. However I did grow their Italian Ice and they produced good and tasted good.
I tried the "Mortgage Lifter" and it sure didn't lift our mortgage. It didn't produce good, nor did the Brandywine.
I find that if I start my own plants they do better than if I buy them.
i'm going to have to try my favorite tomato out there - it's an heirloom variety called Stupice. it's early and really big on flavor. it's always done extremely well for us. we have tried some other heirloom varieties but the Stupice was by far the easiest to grow. favorite cherry tomato is sweet million - last time we grew them our plants grew over 6 ft tall. they'd be great for dehydrating.