Chloe is on Hipp Organic Infant Milk. We used Cow and Gate cartons for a while as we were given this in the hospital after I wasn't producing enought breast milk.
OH and I chose this formula months ago before she was born, we were stood in the supermarket ages comparing all the nutritional values in the different brands and it seemed as good as any. We were never recommended a certain fomula by a midwife or anyone.
Like most people say, I think it's what ever agrees best with your own LO. x