I'm still undecided as to whether I even need a PW4 but in the meantime I'm changing my order.
I had originally automatically gone for the 4G model - I've always had these (well they were 3G) in the past as I spent a lot of time either at, or travelling to and from, work where I had no wi-fi access. But it occurs to me that now I'm retired I could manage with the wi-fi only - I can always use my phone as a hotspot in an 'emergency'.
Added to that is the fact that if you choose 4G, you HAVE to have the 32Gb model and you HAVE to have it without special offers. So you not only have to pay 60 quid extra for the 4G, you also have to pay 30 quid for the extra storage whether you want it or not and 10 quid to remove the SOs, whether you want to or not. That makes it a cool 100 quid more expensive - almost double the price for the "free" 4G.
They're no longer offering the 'pay over 5 months' option, but that's not a deal breaker considering the money I will save. I also think I'm more likely to keep this new Kindle if I'm paying a lot less for it.

Also, as much as I love the official Amazon Kindle covers, and these are the bookstyle ones which I prefer, I'm going to hold out for a cheaper one, a Fintie maybe, which probably won't be long in coming out.