I own a Sensor...worth every penny I paid. The Aria is an interesting stringer...in my opinion, a real good price to performance ratio at $1600...That being said, it is all about choices...I have strung on one, and prefer my machine to it, but I can tell you that the experience was not uncomfortable, just a bit different.
The latest RSi mag has 10 TST Precision 500 machines for sale (used at the Nasdaq 100) at $2200 each...from the photo, looks like a Aria...probably is. These machines are readily available is Oz...never have seen them here. A Lee wrote something up about those machines on another site I believe...