I recently purchased a fermzilla from iKegger. The delivery and service form iKegger has always been great. I have bought equipment from them on 4 separate occasions now. I have nothing bad to say about them.
The Fermzilla is a great product, this is the first dedicated pressure fermented I have used. Previously I have use corny kegs for pressure fermenting. I love everything about the Fermzilla except for a few small things. There is a massive warning written on the side that states it is not to be used for pressure fermenting past Nov 2021. I bought this product in March so by the letter of the law, it lasts 20 months. While this ferment er is cheap, I don't want to be purchasing a product every few years. it seems a little wasteful.
My second problem is one of the O-rings is missing. They send a pack of spares in the box so it's not a massive problem. But now i don't have any spares.
This is still a great value for money product, however if you have the means, a stainless steel ferment er will cost less in the long run. As a side note, I can't rate corny keg fermenters enough. They fit in the fridge, have handles and already set up for pressure transfers. The Corny will always be my go to fermenter for small batches.