What would concern me about the reviews is that they are all "Vine" -- reviewers selected by Amazon to receive a free machine to review.
A $2,000 -- on half-price sale -- not a bad buy if it truly performs up to the selected reviewers. Do feel that Amazon has a pretty good return policy, when needed.
Please be aware, that while different manufacturers machines may be made in the same plant -- they are not identical machines -- but made to specific brand requirements.
When someone says "Kirkland ice cream is great because it's made by Hagen Das" -- it can be true, but the ice creams are not alike.