Hey Billy,
Like you, I have Americana, Folk, and Country style songs and I find EZD 2 to be excellent, especially for a relative newbie like me to learn. If PG Music Real Drums don't work out, I use EZD.
Like others have said, the expansion packs are worth it. They do go on sale...may be on sale now, not sure.
I posted recently about using multiple instances of EZD.
Here's the thread:
http://forum.cakewalk.com/FindPost/3260939