I like pantos on Urban Elements website. They will not only have pantos, but also the corners, blocks, borders and other 'go with' items. And if you sign up for the newsletter, you get the specials as well. She also has a few freebies listed, at least most of the time.
I normally do more freehand than pantos. I would recommend any DVD by Linda Taylor. She's great with instructions! She has freebies on her site as to how to line up pantos, load a quilt, etc. (shown on a Gammil, since that's what she sells).
You can do a search to find the websites, as I don't have access to them right now. Good luck :)
Debbie in Austin