We've always used the Citi Mini in the parks, the single and the double and it's been an awesome park stroller. I thought about trying the GT once when we rented, but couldn't justify the extra price tag since the regular one has all the features we love (large canopy, easy to maneuver even one handed, plenty of storage, lays flat and 1 step easy fold). I will say I've been told that the GT has an adjustable handle that is useful if you are very tall. I'm definitely not, but if you are that may be a consideration.