I currently have a Nexus 5 as an 'in-between phone'. My main question is whether the iPhone 5 will lose its value significantly between now and the inevitable 6S launch in September. I am intending to purchase one for around £100 on eBay as it is the minimum requirement for the Apple Watch. Is the iPhone 5 Apple Watch experience exactly the same as with an iPhone 6 or 6 Plus? Thanks in advance!