I have NOT used this oven yet. Assembly is done though so I can assist here! This oven is very well built. The instructions (yes, look through them) are excellent and easy to follow. I put it together by myself. It would be exceptional to have another set of hands around...but not needed! 
Unit was packed well but my ceramic base was chipped on the one end. Didn't want to return the unit to correct that. The only other minor point I saw was the handles on the doors. Bad design, could be better but livable. One is great, the other cannot be made tight...floppy!
I'm looking forward to test driving this baby!