I bought some lovely tomatoes at the farmer's market. Unfortunately I bought too many to eat and not enough to really can. I decided to send them through the food processor and can them in half-pints for use in tomato gravy later.
The yellow ones are Lemon Boy, low acid and I couldn't tell you what the red ones are, but they were huge. I ate a Lemon Boy and it was yummy. I really couldn't tell the difference in the acid content, but then it doesn't normally bother me.
I dropped by the thrift store and scored 2 dozen quart canning jars for $3.60 a dozen. You can't beat that price with a stick.