We originally bought another Nespresso machine which came with a milk frother, but hardly used that part of it, and it took up a lot of space in our kitchen.
So on a whim we replaced it with the Pixie, and we're really glad we did. It's much smaller, and sits very neatly next to our toaster, meaning that we've freed up space elsewhere for other things.
If you've not had a Nespresso then you'll need to know that the coffee is excellent. Really good quality "crema" thanks to the high pressure pump and excellent coffee. Nespresso isn't the cheapest (around 30p a cup) but I think that's a small price to pay for the convenience and the ability to keep a wide variety of different coffee in the house at all times. There are ways of using non Nespresso capsules to keep the cost down, but I've never bothered as I also like the Nespresso home delivery method.
If you've had a Nepresso maker then the Pixie is as good as any I've tried. The capsule bin is quite small, so if it gets a lot of use you'll be emptying it regularly, but I would still recommend this machine highly. It's at the lower end of the Nespresso price range, but I really can't think of why you'd need anything more costly, unless you were really into frothing the milk in your latte.