Hi Simon, I don’t know where you live but currently in my country Tidal Hi-Fi subscription costs 19,99 € * 12 = 239,88 €/year. Qobuz has recently relesed a new plan called Studio with a total annual cost of 249,99 €/year in a single payment or 24,99 € * 12 =299,88 €/year. Studio is fine for Hi-Res streaming users that do not buy music. The point is that the annual cost is not so diferent from Tidal Hi-Fi (239,88 € vs 249,99 €).
I am currently subscribed to Tidal Hi-Fi for Roon integrationa and Qobuz Hi-Fi. I would consider Qobuz Studio if it would integrate with Roon.