Chris, if you're going to get into serious canning, you need a pressure canner. Mine is a Presto that I bought on sale for $60 when I was in my 20's. That was a lot of money in 1972. They are about $100 now, but with maintenance, your cooker will last forever. The rubber sealers do have to be replaced every few years, but that's something you can do yourself for just a few dollars.
By the way, if you ever have to cook for a lot of people, your pot will make a LOT of chili.
Here's a website where you can get one:
I always loved canning...it's so cool to see all those gleaming jars of produce from your garden. I suggest you also invest in the latest Ball Canning Book...it won't be expensive, and will give you all the info you need.