I'm sticking to my guns on no radiant floor heating. I totally understand the whole warm floor thing and won't argue about how nice it is I just know how I am. I've been pretty content working in my current garage without one and know having the garage kept at 55 degrees all the time will be a huge improvement alone. Don't like the idea of a huge investment buried under concrete where you can never make repairs either. A 32"X34" sealed tight should be easy to keep comfy. Thanks for all the suggestions, appreciate it.