I've been told Android tablets have too high latency when compared with iPads for this, is this true? I know TouchOSC is available for Android. I've been looking at getting both a Launchpad and an eBook reader, so I thought maybe for around the same price I might be able to combine the two. I could afford a second hand iPad, but I'm put off by the battery replacement issue(Especially when buying second hand), and lack of SD slots on the cheaper models. Surely there must be a tablet that has decent latency and perhaps audio hardware? I'm on a budget and don't want to shell out for an iPad if I can avoid it. I'd like to keep it around the 250 mark at most. Thanks.