There is a review of the Innova Arc here: http://www.coffeegeek.com/proreviews/firstlook/innovaarc
Ascaso is the parent company of Innova and recently started selling the same stuff under the name Ascaso instead of Innova. You might want to check what the technical differences are ... I presume that the Arc and the Dream are probably the same machine wearing different pants.
Does your $1k include a decent grinder? If you already have a good grinder, I would argue that its well worth spending slightly more than $1k to get a heat exchanger machine like the Nuova Simonelli Oscar or the Expobar Office Pulser.