We've used Aptamil since Ella switched to formula at 6 weeks old. Ella's never had a problem with it, so we've stuck with it and went on to the follow on milk at 6 months. However, it's the same price as the stage one milk, about £7.99 whereas Hipp Organic follow on is £2.00 cheaper for the same amount which would save us alot, with me not working money is tight. Would it be okay to switch?