Experts and owners like the Valco Baby Ion EX 4 Two as a highly maneuverable double stroller that can be used as a true twin stroller or for children of different ages. It's the double version of the well-reviewed Single Ion, which gets high marks for durability and maneuverability. It gets highest marks for urban environments because its unique egg-shaped design makes it more compact on the outside while giving the passengers ample space. It is expensive and, while it has ample storage, lacks cupholders and a baby tray. (Cupholders are optional.)
The best review of the Valco Baby Ion EX 4 Two comes from Babble.com. "Baby Bargains," a comprehensive book by Denise and Alan Fields that covers baby products, discusses the Valco brand extensively with a mention of the Ion. The handful of user reviews available at Amazon.com give a helpful overview of the stroller in real-world situations.
The Valco Baby Ion EX 4 Two is dubbed the best double stroller for city use by editors of Babble.com. There are a total of nine editors' awards and five Readers' Choice awards in the double stroller category.
Review: Babble Best 2011: Double Strollers, Editors of Babble.com
2. Baby Bargains
"Baby Bargains," the popular baby-gear book by Denise and Alan Fields, offers practical, useful shopping advice even when they don't review a specific model. Brand reliability and customer service are factored into the ratings. In their useful chapter on strollers, the authors discuss both the Valco Baby brand in general and the Ion stroller in particular.
Review: Chapter 9: Strollers, Diaper Bags, Carriers and Other To Go Gear, Denise and Alan Fields, Eighth edition, 2010
The Valco Baby Ion EX 4 Two earns 5 stars (out of 5) in five reviews, with owners saying it's highly maneuverable, fits through doorways easily and is comfortable for newborns.
Review: Valco Baby Twin Ion Stroller, Contributors to Amazon.com