I received our Karu 16 on December 23rd; order placed September 16th. The propane burner was just shipped so I have not used it yet.
This is my first small pizza oven, but I cut my teeth on wood fired oven cooking with a Komodo Kamado so I know a little bit about managing a flame. I think, like all small WFOs, the Karu 16 takes considerable attention to the firebox to keep oven temp somewhat stable for Neapolitan bakes...or anything really. Let the flame subside and the temp drops quickly. Over-stoke and you'll be waiting a little while for it to cool down some.
I only have two gripes really, relative to this the Karu 16 being a small oven and <$1000: The glass window door. No matter what I use to start the fire, including using oak lump which burns relatively cleanly, to get the oven temp up to about 500F before putting in small dried oak pieces, the inside glass surface soots over rendering it useless during baking. Then, after its cool and each and every time post-bake, the razor scraper comes out. The front of the metal portion of the door is pretty much permanently coated with soot.
The 2nd gripe: The door is a bit of a PITA to open/close. Its not mounted on a simple hinge but rather the door has to be lifted vertically to engage/disengage the latch system. It seems to work OK when the oven is cold but with peel & pie in hand and trying to open the door single handedly, its just more challenging than it should be IMHO.
I've only used it 3 times for a total of 9 pies and although the Karu 16 is capable of delivering the goods, so to speak, the fire box requires near constant attention to get bullseye results all things properly baked Neapolitan pies. I have baked perfect Neapolitan pies in it...but looking forward to trying the propane burner which, hopefully, will make it a little more hands off in between pie bakes.
But that door...