Inexpensive tablet well suited as a control point for my streamers, including Sony

While my choice for a streamer is likely well below what most of you can afford and would choose to buy, my choice for a streamer is going to be based on its feature set as much as its sound quality. Granted we all want sound quality that is appealing and revealing, My budget is limited to something well under $1000 and it must be capable of acting as a master streamer for several linked streamers in a distributed sound system. I'm leaning strongly towards a Wiim Ultra

This is a topic of some interest to me as it seems almost any streamer you buy needs a wifi based OS that has the ability to run the controller for the streamer in question. certainly low cost options to do this are desireable and I am guessing that not all streamers work with both android and IOS operating systems. The idea of having a cheap tablet to be a dedicated controller seems like a good plan. I'm thinking an Ipad might be great for this in terms of functionality and long battery life, but perhaps a more expensive solution than other choices.