I have the Nyos 220 and can say it does the job. There is some questionable quality builds I feel that it works great. One of the bottom screws (holds motor bracket) stripped the plate. Did not affect performance. Then after a year of use I cranked down and broke the adjustment tube (somewhat my fault, but was surprised how easy it broke).
That being said echotech was awesome service. I did not do like the person did in the prior picture of "circling the piece needed". I actually provided them the part number from the nyos part manual (provided with purchase) and they shipped it out ASAP. And I was surprised how cheap it was to replace.
I have had good experiences with them and I am about to pair my 220 with a swabbie top and a skimmater locker. As the only complaints is I wish it held more skim.