I also like a cheap canned brand (.50c a can) called "El Pato-Salsa De Jalapeno" . The flavor is little smokey and quite a bit hotter than the others. It is thin like a blended salsa and has lots of seeds. The canned flavor is not overpowering at all and I love to add chopped cilantro to this one too.
I had never seen El Pato before until I was doing some grocery shopping "south of the border" in Washington. It was on sale super cheap so I bought a few cans to try - now I use it in everything! It's a great addition to pasta sauce & chili too.
__________________ "The only way of understanding the limits of the possible is to venture a little way past them into the impossible." -Arthur C. Clarke