To address your question " Do I rate it?", I would say "Yes, But."
It should be considered as an accompaniment to finger pricking not a replacement. This is mainly due to the inaccuracies of the Libre (although through calibration this can be improved). As a result of this (or because they are a bit behind the times), readings from the Libre are not accepted before driving.
I know some people do just rely on the Libre. For example, children who do not like having their finger pricked. With my experience, I would be very nervous to use it for calculating insulin doses.
However, I did say "Yes". This is because it is very useful for identifying trends and adjusting insulin doses accordingly. For example, through use of the Libre, I have significantly adjusted the timing of my pre-bolus for eating and tweaked the basal settings on my pump.
Another problem some people have is an allergic reaction to the adhesive that is used. This can build up over time. So, at first you feel fine but over months of wear, they start to experience a skin rash.
With this in mind, I would recommend trying one. Yes, one. That way, you can see how accurate it is for you and whether you have an allergic reaction before forking out lots of money- I believe the cheapest in the UK is £44 for one sensor which lasts 2 weeks from Asda pharmacy.
But on the plus side, it is no trouble for travel - I have been through airport scanners wearing one and it was not detected.