I'm using Amazon's competing service for my 45,000 tracks; iTunes Match didn't cut it.
It's a mixed bag; matching/uploading my music collection took over a FRICKIN WEEK!!! On the plus side, they have clients for everything, iPhone, iPad, Android, even the awesome Sonos system which I love.
On the downside, iOS integration is sucky, but that's probably Apple's fault: if you download music, it's only visible in Amazon's MP3 app, NOT in the Apple Music app (the Amazon MP3 Cloud Player shows both your resident Apple tracks and the downloaded Amazon tracks). I don't think apps are able to push tracks into the music repository.
Bottom line, it's clunky, but if you have a fairly large music collection it's your only option; same thing if you want to share with non-Apple devices.