A few years ago I was lucky enough to get an iPad2 for Xmas from my wife and Mother in law. It was the top model with all the options and the most memory, so not overly cheap. After installing the iOS8 (which I wouldn't have done had I known the issues) my iPad is suffering the go slow that many others are experiencing.
I must be doing something right as my wife and Mother in law have mentioned that they may be able to get me a replacement iPad again for this Xmas & B'day, but they are a little frustrated that the gift they spent a lot of money on is now not really working after a relatively short time.
I feel a bit guilty about the situation, and I don't want them to get me another iPad to be in the same situation in 2 years time (I realise there will obviously be updated tech, but I just want an iPad that is still usable). To try and keep the cost down, I have looked into refurbished models, and I can get a good deal on a 32gb iPad Air, but will this be unusable in a couple of years with the software of the time, or would the processor in the iPad Air be able to handle software updates for longer than my iPad 2. Sorry, I'm not really up with the play with the processor specs and what they mean, hence my question.
The other option is of course to get the iPad Air2, but for the 64gb model, it's another $320 so not insignificant, however I do understand that the processor has been improved again for this one. Given my situation, would it be worth paying the extra money as it will mean the iPad will be usable for a lot longer, or is the extra money not really going to extend the usable life (the extra features of the Air2 aren't all that important to me).