From a non Sooloos owners perspective (Sonos on iPhone) and only having had a short play on an iPad 1.

8.5/10 probably more on iPad 2.

Better than my Sonos app on iPhone but that maybe down to iPhone/iPad differences.

Screen could update faster but is apparently better on iPad 2. Screen updates are cached and on iPad 1 with limited RAM only 1 page worth of covers seems to be cached so scrolling to another page means that ther are a couple of seconds to build up the cover art grid of 15 or 16 covers depending on orientation. Populating the grid appears random which actually makes for a not unpleasant refresh. Caching more pages would be better though.

Not all views appear to have a covert art view.

A couple of minor anomalies found. I personally couldn't get unlinking of zones to work. Another HHer found a dialog bug (cancel option out of view) that exists in old app.

Not able to edit metadata but that was a design decision to protect metadata from unintentional updates. As a Sonos owner I don't see it as an issue as if I want to tidy up meta data I would have to use a 3rd party app any way and would prefer a proper keyboard/mouse with cut/paste anyway rather than half arsed system on iOS.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).