I have a choice of medrontric 640g , Aminas Vibe , and Roche combo / insight
As was somewhat observed earlier, what does or does not make a pump a good fit for you is often a
very personal choice.
While this sort of "which pump?" question pops up frequently in the Diabetic Online Community (#DOC), I frankly am never sure how to respond to it. It's much easier to respond to more specific questions about a particular pump. Usually you won't get strong feedback on general preferences except from the person or three who absolutely
loathed (or loved) a pump they have used.
I can't speak from actual experience with any of these pumps. I currently use a Medtronic Paradigm Revel (723) which is 2 generations previous to the 640G. I started with a MiniMed 507 in 1996 and have only used Medtronic/MiniMed pumps since then.
I am in the U.S. so I have absolutely
no idea how your system in the UK works in terms of obtaining a pump. But what I always recommend is to try as hard as possible to try out a pump before you are committed. If that is at all possible, it's the best way to find out what might best work for you.
I also use CGM (Continuous Glucose Monitoring) with my pump. I don't know if you have any thoughts one way or another about CGM, but as time passes it is increasingly becoming a significant feature for a pump.
One of the key reasons to consider a 640G is the way in which it integrates CGM into its operation. When it is connected to Medtronic's proprietary CGM, the 640G can be set up to try to predict from the CGM glucose reading an approaching hypo and stop basal insulin delivery 30 minutes in advance. If/when your CGM sensor glucose recovers, it resumes your basal.
This is a nifty feature, especially for those who may have problems with hypoglycemia. However, if you don't (or can't) use Medtronic's CGM, then it's moot.
The Vibe also integrates with a CGM system. It uses the CGM of another manufacturer, the Dexcom G4. At this point the Vibe does not do anything other than receive and display your CGM sensor readings. The Vibe will not act independently on your CGM readings. However, the benefit of the Vibe is that is used the Dex CGM.
The general #DOC opinion seems to be that Dexcom's CGM is easier to use and/or more reliable than Medtronic's. In clinical tests of their CGM which both Dexcom and Medtronic have run, Dexcom to this point always comes up with better accuracy than Medtronic's CGM.
So ... that's what pops into my mind. Perhaps not all that relevant?