We have two of these (a small and a large), different makes but they both work equally well. When you look at all the ones available they look "badge engineered" so, if you're thinking of buying one, just get the cheapest/most attractive one.
Did some online research on these last year, bought my daughter one for Christmas.
They all appear to have fan assist.
I went for a Pinnetti (or something with similar spelling) because they had a delay start timer, an expansion ring, (so you can cook big meals) and a hinged lid. Most of them needed a stand to put the lid in when removed to check how your meal is cooking.
My daughter loves it and has many nice meals from it.
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