Late to the party, and haven’t read the previous pages.
I have an Ooni Koda, (the smaller one) and gas powered.
Its great, gets up to temp in 15 mins, easy to use, just need a little practice whipping the raw pizza in, and turning it.
Takes no more than 2 minutes to cook.
Recommend.
You do need gas, and Calor have had an embargo on for the last year, however other companies exist and I have FloGas canisters (I got one, and when i thought it might be running out, i bought another, so have 2 on the go, when one is empty i refill but still have the spare)
Not sure you can get them refilled anywhere, but they do a free delivery service and have been swift when i used them