Well, the proof of the pudding is in the eating. Back in the early days of the iPod's success, company after company came out with iPod-killers that all basically flopped. Then, after the iPhone became a hit, everyone touted new smartphones as iPhone killers, which also flopped. Android is the only thing which has every reached the status of a legitimate iKiller. The Android tablet or some descendent of it might be your best bet for finding the tablet you're looking for.