Hi, i don't want to cloud your choice and I don't have a pump myself (yet). However I get the impression from one of your questions that you "may" have a possible interest in looping?
I have heard lots of good things about the Minimed 640G from lots of people, however I think I am right in thinking that the only pump on your list that would enable a Closed Loop system is the Accucheck Combo.
In my opinion the best choice of CGM at the moment is the Dexcom G6, but even on their monthly plan, it will cost you £159 per month because you will not get it on the NHS.
I have been lucky enough to qualify for Libre Sensors on the NHS which is saving me about £120 a month. (I used to buy them myself for 18 months).
If you then buy a MiaoMiao transmitter for approx £159 (ironically) as a one-off purchase, you can turn your Libre FGM into a CGM.
(I am using this setup myself now and combined with XDrip on my Android phone, it is very good)
So, Libre + MiaoMiao + XDrip + AndroidAPS + Accucheck Combo is effectively the primary building blocks of a DIY Closed Loop system.
Here is the website of someone who has already done it.
https://bionicwookiee.com/2018/10/12/my-insulin-pump/
I am not suggesting that you do this, as everyone has to make up their own minds if they want to go down this route. Also, don't imagine that you are going to get much support from your Endo either..
Just bear in mind that once you have chosen your pump, you will probably be stuck with it for about 3 to 4 years.
Hope this hasn't muddled your choices. Just thought you ought to know that there are more things to consider.