Howdy guys, I'm new here and this will be my first post. Kayen, I saw that you're looking for a heater for your Chi. I've been using a Finnex 50w titanium heater on my Chi since last October with great success.
My main complaint would be the power cord is thick and stiff, would be nice if it was bent 90 degrees at the heater since you're supposed to have the heater placed horizontally. I had it hidden behind a piece of driftwood.
Here's a pic from last November after I first set it up: