I found two good sources for caves. One is Rosenthal Pottery, which has their own website and also sell on Aquabid. I believe the website is www.rosenthalpottery.com. They make clay caves of many styles, and if you get it through Aquabid, they usually give a bonus veggie weight with the cave.
The other was in the Classifieds (United States section) of www.plecofanatics.com. Here's the link to one of his sales. He makes granite caves with removable tops. The top piece just sits on the body of the cave so that it is easily removed (great for breeding or cleaning them).
Both were great and I am very happy with them. Zcliff (plecofanatics) had great communication and gave me a couple extra caves, and they were already super cheap, IMHO.
I've already spoke with zclift. His caves are cool looking. I will probably buy one from him next week. I was seeing if there were any other options. I'm not a fan of the cone caves. They look too tight. I was looking for something more opened I guess.