My point is that we cannot compare VIV to Do!Aqua but say that they are a fraction of ADA cost. Apples to apples.
IMO besides very minor shape differences there is not really and quality difference between Do Aqua and ADA versions so you could compare VIV to both Do and ADA. So VIV compared to ADA there is a much more appealing advantage in cost to VIV, and VIV compared to Do! the price is close to the same but I think VIV comes in a little bit cheaper than Do! still. And the quality is as good as both. So you make your decision whether you want the same quality pipe but with different logos on it really for a higher or lower price. Is what it comes down too.