I use Linux, Windows, iOS and Android on a more or less daily basis and they all work fine together. Well, getting stuff on and off the iPad is a pain and iTunes is one of the worst pieces of software I've ever used, but otherwise everything is good. I strongly recommend not sticking to one ecosystem - it's a big mistake to believe that one company has all the best products, now or in the future. And services like Spotify, Dropbox, Google Docs, Skype, GMail and many more work well across all of them. I won't use a service that's limited to or gives preferential treatment to a certain platform. I suggest you don't either.