I use a Brewzilla 30L. I'm happy with it. There's a few teething batches to get over, but once you're through them it's far simpler to brew than anything else I've tried.
Value for money depends on how important some of the features are to you. I looked at the Grainfather and didn't really see the value. But for other people the things they offer are sure to be worth the extra money. I don't think you can really go wrong with the electric all in one systems, it's more a matter of knowing what you want and getting one that fits that spec.