I have been using a Samsung Galaxy Tab 4 for my Phantom 3 Advanced, which works fairly well but does lag a bit on longer flights. However, I have an opportunity to get either an iPad Mini 4 (Cellular version) or an iPhone 6+ to use instead of the Samsung Tablet. So what's best in your opinion and why? Not concerned with the cost for either the iPhone of the iPad in this case. I'm only looking for which is the better, faster and the more reliable option based on your experience. Thank you for any advice and assistance.