I’ve never seen the Alfano before but while it looks cheaper on the surface it doesn’t come with any leads.
By the time you do the Pro 3 plus GPS plus a single temp sensor it’s like $30 difference between that and the Mychron 5.
I do see how it can be more of a savings if you’re using 2 temp sensors as the expansion method on the Alfano is a $30 adapter vs. $100 for the 2T Mychron.