I have the Canon Pixma MX360 and like it very much. It didn't cost much, about $60 I think at Walmart. It has an outside paper feed, so it works very well with cardstock. I've even put up to 5 or 6 sheets in the feeder at once and had no problems.
The tech world moves so fast, that this model has probably been discontinued, lol. But I think you would be okay with any decent printer that has an outside feed, so that the cardstock doesn't have to go inside and roll around a roller. I think that's what causes jams.
Good luck with your search.