Our banana peppers did great last year and seem to be doing well so far this year. They aren't heirloom though. We've also had a ton of luck with jalapeno and ancho. Bell peppers did okay, but not as good as the others.

Thanks ollierose!

You are welcome georgia! I was also thinking that maybe you could check the rate and review vendor forum for sites that deal in heirloom seeds. I also seem to recall their being a thread on the seed exchange conversation side about vendors and I'm pretty sure that one of them sold lots of heirloom veggies. Check this thread and see if you find a good site:

Here is a link that might be useful: Name those favorite garden catalogs