I am pleased to say that in my opinion the Dulce Gusto decaf is excellent and every bit as good as the caffeinated variety. As well as a small intense espresso is also seems to work very well running a full 200 ml of water through the pod to produce an a delicious mug full of americano.
I also used the decaf very successfully instead of the caffeinated coffee that comes with the cappuccino and there is no reason to suppose that it would not be equally good as a latte. In this respect I think it is a sad that Nestlé do not sell latte and cappuccino milk pots separately so that you could make these drinks with the copy of your choice rather than the one that comes packed in the box. I emailed Nestlé about this but it appears that they have no plans to sell the milk separately.
However, £19.30 equates to £6.43 per box of 16. In the Dulce Gusto shop they are £3.68 per box so it pays to shop around. Do not assume that just because its on Amazon that its going to be at a competitive price!!