Recommendation for Cascade Controller

[supercoolin]

This morning I decided to jump off the deep end and build a cascade system. First selection is of-course the controller to determine what I can automate. What is available in today's market and where are the best sites to aguire them from?

I really do appreciate any assistamce I can get in this area, I want it to be a lazy mans rig once it is built ( other than daily mess'n with it).

[n00b 0f l337]

I would suggest a PID and contactor setup; or panel meter and contactor (as long as the panel meter has a tuneable temperature).
Run the second stage through the contactor, and you should be good.