We have a 1.6 diesel as a demo and the trekking felt a lot quicker, probably wasnt but felt different, just couldnt put my finger on it, but i preferred the trekking. You sit higher in the new one, its only 14mm but u notice it, and I prefer the styling. You also get city brake standard which means it'll stop the car automatically under 30km/h if the driver doesn't. The insurance groups are lower than the standard car because of this.
Cost is £700 more than a lounge, so 17k for a 1.4 fire trekking going up to about 19k