Needing help deciding between a 4G or 5G

My faithful Classic 4G finally died the other night. I have had it for 8 years and am trying to decide what its replacement will be.

I have an Asus Transformer TF101 tablet that I use for apps and ebooks but I am wanting something with wifi that can fit in a pocket to primarily be a music player when driving and at home on the radio dock.

I would love to have apps/internet/video on the smaller device but considering I already have the android tablet and my dumb phone does everything I need a phone to do when out and about and away from the internet so not interested in any form of iPhone.

The 5G new is $400 for 64gb but a friend can use his friends/family discount to bump it down to $340 for 64gb, while the refurbished 64gb is $299.

But going to the 5g brings in the lightning connecter issue. I would have to get new car/wall chargers (Looking at this $40 set) and a Lightning to 30-pin Adapter ($16 used on eBay) adds an additional $56 to whatever choice.

While the 4G 64GB refurbished is $229 and still uses 30-pin so I wouldn't need to replace all of my hardware as long as I can tell, since it is all the same stuff, right?

A $200 difference (including lightning hardware in cost) is making me think since the 4G is 4 year old tech with only iOS 6 possible, the A4 processor, and a junker camera while the 5G is still new-ish, can do iOS 7, faster processor/ram, bluetooth, and a better camera.

I don't see myself spending the money upgrading to the 6G or locking myself to a smartphone so it is between these two.

So the question is whether the 5G is more worthwhile or would the 4G suit me just fine and if I go the 4G route, to go refurbished or attempt looking for it used.

 

From Apple's site the new and refurbished say it only comes with the cable, no charger, for what is included. Did it used to come with a charger?

Both of my chargers are the original 30-pin. These are what I have


I don't have a USB charger for either and am still trying to find the best one to get without too much additional cost. The Griffin PowerDuo set that I linked in my original post are the ones I am thinking about getting unless any of you know of some that are better.