I would like too add a question on Terp's features you want question?
 My limited experience with a true reflector oven was okay, but one of the things I noticed was trying to adjust the oven's position in regard to maintaining a "ideal" baking temp?
 To hot, outside burnt, inside raw. To cool, took forever and baked goods didn't brown or rise properly?
 When I built my Flashing oven, I added a high temp thermometer which enabled me to keep the temp at the right temp for the item baked.
 Would one of those little aluminum oven thermometers you hang in your home oven, help with judging baking times and proper temps?